← Capabilities
- International families
- 25k2015 to 2024
- Leading country
- United States1.2× the next
- All families
- 262khome filings included
- Over five years
- Steady2020 to 2024 against the five before
Year by year
Patent families by country of origin and the year of the earliest filing, 2000 to 2025; 2025 is a part year, still filling in. International families are those for which protection was sought beyond one country.
Volume
International patent families in the capability, by the year of the earliest filing.
Source: Global Institute for National Capability (GINC), 2026. Underlying patents from 107 patent offices, IFI CLAIMS and Google
Share by country
Each country's share of the year's international families, in per cent: the capability's five largest countries of origin, 2015 to 2024, and the rest of the world.
Source: Global Institute for National Capability (GINC), 2026. Underlying patents from 107 patent offices, IFI CLAIMS and Google
Country leaderboard
International patent families, 2015 to 2024, by country of origin. Growth compares the latest five full years with the five before.
Ten largest
United States
China
Japan
South Korea
Germany
France
Canada
United Kingdom
Italy
Taiwan
5,013
4,301
3,866
1,986
1,665
847
621
596
427
390
| 2000 to 2025 | ||||||
|---|---|---|---|---|---|---|
| 1 | United States | 5,013 | 20.2% | 0.9× | 8,793 | |
| 2 | China | 4,301 | 17.4% | 1.4× | 207,493 | |
| 3 | Japan | 3,866 | 15.6% | 0.8× | 12,126 | |
| 4 | South Korea | 1,986 | 8.0% | 0.9× | 16,169 | |
| 5 | Germany | 1,665 | 6.7% | 0.9× | 2,431 | |
| 6 | France | 847 | 3.4% | 1.0× | 1,216 | |
| 7 | Canada | 621 | 2.5% | 0.7× | 901 | |
| 8 | United Kingdom | 596 | 2.4% | 0.9× | 821 | |
| 9 | Italy | 427 | 1.7% | 1.1× | 788 | |
| 10 | Taiwan | 390 | 1.6% | 0.8× | 1,263 | |
| 11 | Netherlands | 365 | 1.5% | 0.7× | 481 | |
| 12 | Switzerland | 361 | 1.5% | 0.9× | 437 | |
| 13 | Australia | 350 | 1.4% | 1.0× | 530 | |
| 14 | Sweden | 333 | 1.3% | 1.0× | 368 | |
| 15 | Israel | 305 | 1.2% | 1.0× | 358 | |
| 16 | Spain | 295 | 1.2% | 1.1× | 435 | |
| 17 | Finland | 289 | 1.2% | 0.8× | 330 | |
| 18 | India | 244 | 1.0% | 1.1× | 319 | |
| 19 | Saudi Arabia | 227 | 0.9% | 1.2× | 561 | |
| 20 | Denmark | 196 | 0.8% | 1.1× | 212 | |
| 21 | Austria | 174 | 0.7% | 1.1× | 217 | |
| 22 | Norway | 163 | 0.7% | 0.8× | 191 | |
| 23 | Singapore | 151 | 0.6% | 0.9× | 175 | |
| 24 | Türkiye | 151 | 0.6% | 2.4× | 319 | |
| 25 | Belgium | 135 | 0.5% | 1.1× | 199 | |
| 26 | Russia | 117 | 0.5% | 0.7× | 1,356 | |
| 27 | Brazil | 117 | 0.5% | 0.9× | 618 | |
| 28 | South Africa | 64 | 0.3% | 0.6× | 71 | |
| 29 | Mexico | 63 | 0.3% | 1.1× | 307 | |
| 30 | Poland | 62 | 0.3% | 0.9× | 500 | |
| 31 | Hong Kong | 45 | 0.2% | 0.9× | 69 | |
| 32 | New Zealand | 43 | 0.2% | 1.5× | 67 | |
| 33 | Malaysia | 43 | 0.2% | 1.1× | 142 | |
| 34 | Czechia | 42 | 0.2% | 1.5× | 102 | |
| 35 | Portugal | 42 | 0.2% | 3.2× | 70 | |
| 36 | Ireland | 40 | 0.2% | 1.2× | 53 | |
| 37 | Luxembourg | 31 | 0.1% | 0.2× | 34 | |
| 38 | Hungary | 16 | 0.1% | 1.0× | 57 | |
| 39 | Cayman Islands | 13 | 0.1% | 0.3× | 15 | |
| 40 | Liechtenstein | 8 | 0.0% | 3.0× | 9 |
Applicants
The largest applicants by international patent families, 2015 to 2024: across the world, then within each of the five countries with the most families in Water Supply & Treatment. Names are as held in the source and are not consolidated across subsidiaries.
Global
24,756 international families
KURITA WATER IND LTD · Japan
PANASONIC IP MAN CO LTD · Japan
ORGANO CORP · Japan
LG ELECTRONICS INC · South Korea
ECOLAB USA INC · United States
ORGANO KK · Japan
414
246
245
175
167
166
United States
5,013 international families
ECOLAB USA INC
EVOQUA WATER TECH LLC
UNIV CALIFORNIA
DOW GLOBAL TECHNOLOGIES LLC
BL TECHNOLOGIES INC
MASSACHUSETTS INST TECHNOLOGY
165
117
74
62
58
55
China
4,301 international families
MIDEA GROUP CO LTD
FOSHAN SHUNDE MIDEA WATER DISPENSER MFG CO LTD
NANJING UNIVERSITY OF TECHNOLOGY
UNIV TONGJI
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD
HUNAN BRUNP RECYCLING TECH CO LTD
154
106
103
73
63
63
Japan
3,866 international families
KURITA WATER IND LTD
PANASONIC IP MAN CO LTD
ORGANO CORP
ORGANO KK
TORAY INDUSTRIES
PANASONIC IP MAN CORP
414
246
244
165
134
112
South Korea
1,986 international families
LG ELECTRONICS INC
SAMSUNG ELECTRONICS CO LTD
COWAY CO LTD
LG CHEMICAL LTD
DOOSAN HEAVY IND & CONSTRUCTION CO LTD
KOREA INST SCI & TECH
175
96
78
53
46
42
Germany
1,665 international families
BASF SE
BOSCH GMBH ROBERT
BRITA GMBH
SIEMENS AG
BRITA SE
BSH HAUSGERAETE GMBH
60
59
52
38
36
32
Similar capabilities
The nine capabilities that share the most international patent families with Water Supply & Treatment, 2015 to 2024: the families counted in both as a share of those counted in either. Each card shows its five largest countries.
Strategic Infrastructure
Wastewater & Sanitation
73.2% shared · 22,437 families in both
United States
China
Japan
South Korea
Germany
5,326
5,281
4,432
2,243
2,077
Strategic Infrastructure
Bulk Water Transfer & Desalination
26.9% shared · 6,986 families in both
United States
Japan
China
South Korea
Germany
1,780
1,554
1,245
636
477
Strategic Infrastructure
Processing & Refining
3.2% shared · 1,548 families in both
United States
China
Japan
Germany
France
5,663
3,476
2,794
1,548
1,459
Strategic Infrastructure
Chemicals & Hazardous Process Industry
2.9% shared · 2,748 families in both
United States
Japan
China
Germany
South Korea
16,120
13,036
11,408
6,357
5,716
Critical Technology
Hydrogen, Ammonia & Sustainable Fuels
2.5% shared · 1,534 families in both
Japan
United States
Germany
South Korea
China
8,805
6,231
5,748
4,176
2,470
Production & Innovation
Foundational & Process Industries
1.7% shared · 5,613 families in both
Japan
United States
China
South Korea
Germany
94,317
55,479
36,011
28,513
26,005
Strategic Infrastructure
Solid Waste & Recycling
1.7% shared · 790 families in both
Japan
China
United States
Germany
South Korea
3,883
3,717
3,628
1,951
1,882
Trade & Investment
Strategic Supply Security
1.3% shared · 436 families in both
Japan
China
United States
South Korea
Germany
2,305
1,800
1,307
1,130
383
Strategic Infrastructure
Dams, Reservoirs & Flood Defence
1.3% shared · 344 families in both
China
United States
Germany
Japan
South Korea
808
403
293
212
172
Crosswalk
How Water Supply & Treatment is matched to the patent classifications. The entries below were chosen for it; each stands for itself and everything beneath it in the scheme, 244 Cooperative entries in all. A patent family counts when any of its codes, in either scheme and at any office, falls under one of them. Codes since retired are placed under the entries that replaced them.
| Entry | Title in the scheme | Why it is chosen | CPC codes | IPC codes | Documents |
|---|---|---|---|---|---|
| E03B | Installations or methods for obtaining, collecting, or distributing water | Obtaining, collecting, storing and distributing water | 77 | 58 | 217,550 |
| C02F1/00 | Treatment of water, waste water, or sewage | Physical and chemical treatment of water | 150 | 47 | 1,619,824 |
| C02F5/00 | Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents | Water softening and scale prevention | 14 | 8 | 69,506 |
| C02F9/00 | Multistage treatment of water, waste water or sewage | Multistage water treatment | 3 | 9 | 346,592 |
| E04H12/30 | Water-towers | Water towers | 1 | 1 | 962 |
| E03B5/00 | Use of pumping plants or installations; Layouts thereof | Left out |
CPC and IPC codes are the codes in use on patent documents, at any office, that fall under the entry. Documents is the larger of the two schemes' counts of documents carrying one of them. An entry with no IPC codes can be told apart only in the Cooperative scheme.
The Cooperative codes in use that count towards Water Supply & Treatment: 245 codes on 1,905,867 documents. The 150 most used are listed; the full list is in the cpc-to-capability.csv download.
| Code | Title | Under entry | How placed | Documents |
|---|---|---|---|---|
| C02F9/00 | Multistage treatment of water, waste water or sewage | C02F9/00 | In the scheme | 112,421 |
| C02F1/001 | Processes for the treatment of water whereby the filtration technique is of importance | C02F1/00 | In the scheme | 106,625 |
| C02F1/66 | Treatment of water, waste water, or sewage by neutralisation; pH adjustment | C02F1/00 | In the scheme | 58,928 |
| C02F1/283 | Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them | C02F1/00 | In the scheme | 56,517 |
| C02F1/441 | Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis | C02F1/00 | In the scheme | 48,399 |
| C02F1/281 | Treatment of water, waste water, or sewage by sorption using inorganic sorbents | C02F1/00 | In the scheme | 37,587 |
| C02F1/52 | Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities | C02F1/00 | In the scheme | 37,135 |
| C02F1/42 | Treatment of water, waste water, or sewage by ion-exchange | C02F1/00 | In the scheme | 37,046 |
| C02F1/444 | Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration | C02F1/00 | In the scheme | 36,850 |
| C02F1/44 | Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis | C02F1/00 | In the scheme | 36,129 |
| C02F1/32 | Treatment of water, waste water, or sewage by irradiation with ultraviolet light | C02F1/00 | In the scheme | 35,542 |
| C02F2001/007 | Processes including a sedimentation step | C02F1/00 | In the scheme | 35,091 |
| C02F1/78 | Treatment of water, waste water, or sewage by oxidation with ozone | C02F1/00 | In the scheme | 34,748 |
| C02F1/50 | Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment | C02F1/00 | In the scheme | 33,482 |
| C02F1/725 | Treatment of water, waste water, or sewage by oxidation by catalytic oxidation | C02F1/00 | In the scheme | 33,345 |
| C02F1/5236 | Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents | C02F1/00 | In the scheme | 33,251 |
| C02F1/008 | Control or steering systems not provided for elsewhere in subclass C02F | C02F1/00 | In the scheme | 32,440 |
| C02F1/56 | Macromolecular compounds | C02F1/00 | In the scheme | 29,541 |
| C02F1/40 | Devices for separating or removing fatty or oily substances or similar floating material | C02F1/00 | In the scheme | 29,263 |
| C02F1/722 | Oxidation by peroxides | C02F1/00 | In the scheme | 25,680 |
| C02F1/00 | Treatment of water, waste water, or sewage | C02F1/00 | In the scheme | 25,380 |
| C02F1/24 | Treatment of water, waste water, or sewage by flotation | C02F1/00 | In the scheme | 23,878 |
| C02F1/30 | Treatment of water, waste water, or sewage by irradiation | C02F1/00 | In the scheme | 23,672 |
| C02F1/325 | Irradiation devices or lamp constructions | C02F1/00 | In the scheme | 21,230 |
| C02F1/5281 | Installations for water purification using chemical agents | C02F1/00 | In the scheme | 20,847 |
| C02F1/28 | Treatment of water, waste water, or sewage by sorption | C02F1/00 | In the scheme | 20,628 |
| C02F1/04 | Treatment of water, waste water, or sewage by heating by distillation or evaporation | C02F1/00 | In the scheme | 20,618 |
| C02F1/20 | Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases | C02F1/00 | In the scheme | 20,516 |
| C02F1/76 | Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens | C02F1/00 | In the scheme | 20,044 |
| C02F1/285 | Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents | C02F1/00 | In the scheme | 18,408 |
| C02F1/72 | Treatment of water, waste water, or sewage by oxidation | C02F1/00 | In the scheme | 18,134 |
| C02F1/46109 | Electrodes | C02F1/00 | In the scheme | 17,855 |
| C02F1/288 | Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered | C02F1/00 | In the scheme | 17,766 |
| C02F1/68 | Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water | C02F1/00 | In the scheme | 17,241 |
| C02F1/4672 | Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation | C02F1/00 | In the scheme | 16,280 |
| C02F1/5245 | Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron | C02F1/00 | In the scheme | 15,661 |
| C02F1/02 | Treatment of water, waste water, or sewage by heating | C02F1/00 | In the scheme | 15,271 |
| C02F1/38 | Treatment of water, waste water, or sewage by centrifugal separation | C02F1/00 | In the scheme | 15,054 |
| C02F1/442 | Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration | C02F1/00 | In the scheme | 14,861 |
| E03B3/02 | Methods or installations for obtaining or collecting drinking water or tap water from rain-water | E03B | In the scheme | 14,781 |
| C02F1/46104 | Devices therefor; Their operating or servicing | C02F1/00 | In the scheme | 14,009 |
| C02F1/003 | Processes for the treatment of water whereby the filtration technique is of importance using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices | C02F1/00 | In the scheme | 13,747 |
| C02F1/048 | Purification of waste water by evaporation | C02F1/00 | In the scheme | 13,685 |
| C02F1/004 | Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters | C02F1/00 | In the scheme | 12,276 |
| C02F1/48 | Treatment of water, waste water, or sewage with magnetic or electric fields | C02F1/00 | In the scheme | 12,096 |
| C02F1/4674 | Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine | C02F1/00 | In the scheme | 10,670 |
| C02F2001/46133 | Electrodes characterised by the material | C02F1/00 | In the scheme | 10,474 |
| C02F1/74 | Treatment of water, waste water, or sewage by oxidation with air | C02F1/00 | In the scheme | 10,440 |
| C02F1/286 | Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof | C02F1/00 | In the scheme | 10,340 |
| C02F1/54 | Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material | C02F1/00 | In the scheme | 10,249 |
| C02F1/461 | Treatment of water, waste water, or sewage by electrochemical methods by electrolysis | C02F1/00 | In the scheme | 9,892 |
| C02F1/36 | Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations | C02F1/00 | In the scheme | 9,715 |
| C02F1/58 | Treatment of water, waste water, or sewage by removing specified dissolved compounds | C02F1/00 | In the scheme | 9,617 |
| C02F1/70 | Treatment of water, waste water, or sewage by reduction | C02F1/00 | In the scheme | 9,567 |
| C02F1/14 | Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy | C02F1/00 | In the scheme | 9,349 |
| C02F1/4693 | Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis | C02F1/00 | In the scheme | 9,271 |
| C02F9/20 | Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems | C02F9/00 | In the scheme | 8,842 |
| C02F1/463 | Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation | C02F1/00 | In the scheme | 8,644 |
| C02F2001/425 | Treatment of water, waste water, or sewage by ion-exchange using cation exchangers | C02F1/00 | In the scheme | 8,121 |
| C02F1/4618 | Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water | C02F1/00 | In the scheme | 7,970 |
| C02F5/00 | Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents | C02F5/00 | In the scheme | 7,775 |
| C02F5/10 | Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances | C02F5/00 | In the scheme | 7,704 |
| C02F1/26 | Treatment of water, waste water, or sewage by extraction | C02F1/00 | In the scheme | 7,119 |
| C02F1/006 | Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks | C02F1/00 | In the scheme | 6,958 |
| C02F1/469 | Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis | C02F1/00 | In the scheme | 6,470 |
| C02F1/688 | Devices in which the water progressively dissolves a solid compound | C02F1/00 | In the scheme | 6,086 |
| C02F5/12 | Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen | C02F5/00 | In the scheme | 5,936 |
| C02F5/14 | Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus | C02F5/00 | In the scheme | 5,922 |
| C02F1/043 | Details | C02F1/00 | In the scheme | 5,909 |
| C02F2001/46142 | Catalytic coating | C02F1/00 | In the scheme | 5,841 |
| C02F1/4695 | Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation | C02F1/00 | In the scheme | 5,813 |
| E03B3/28 | Methods or installations for obtaining or collecting drinking water or tap water from humid air | E03B | In the scheme | 5,785 |
| C02F1/683 | Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water by addition of complex-forming compounds | C02F1/00 | In the scheme | 5,746 |
| C02F1/16 | Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes | C02F1/00 | In the scheme | 5,616 |
| C02F1/4691 | Capacitive deionisation | C02F1/00 | In the scheme | 5,616 |
| C02F5/08 | Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents | C02F5/00 | In the scheme | 5,604 |
| C02F2001/46152 | Electrodes characterised by the shape or form | C02F1/00 | In the scheme | 5,515 |
| C02F1/62 | Heavy metal compounds | C02F1/00 | In the scheme | 5,386 |
| C02F1/5209 | Regulation methods for flocculation or precipitation | C02F1/00 | In the scheme | 5,364 |
| C02F1/467 | Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction | C02F1/00 | In the scheme | 5,088 |
| C02F1/505 | Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment by oligodynamic treatment | C02F1/00 | In the scheme | 5,074 |
| C02F1/46 | Treatment of water, waste water, or sewage by electrochemical methods | C02F1/00 | In the scheme | 5,058 |
| C02F1/481 | Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets | C02F1/00 | In the scheme | 5,036 |
| C02F1/488 | Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation | C02F1/00 | In the scheme | 4,929 |
| C02F1/5263 | Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds | C02F1/00 | In the scheme | 4,872 |
| C02F2001/422 | Treatment of water, waste water, or sewage by ion-exchange using anionic exchangers | C02F1/00 | In the scheme | 4,859 |
| E03B7/07 | Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems | E03B | In the scheme | 4,846 |
| C02F1/686 | Devices for dosing liquid additives | C02F1/00 | In the scheme | 4,835 |
| C02F1/727 | Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas | C02F1/00 | In the scheme | 4,833 |
| C02F1/705 | Reduction by metals | C02F1/00 | In the scheme | 4,661 |
| C02F2001/46138 | Electrodes comprising a substrate and a coating | C02F1/00 | In the scheme | 4,627 |
| C02F1/34 | Treatment of water, waste water, or sewage with mechanical oscillations | C02F1/00 | In the scheme | 4,526 |
| C02F1/4608 | Treatment of water, waste water, or sewage by electrochemical methods using electrical discharges | C02F1/00 | In the scheme | 4,490 |
| C02F2001/5218 | Crystallization | C02F1/00 | In the scheme | 4,465 |
| C02F1/445 | Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by forward osmosis | C02F1/00 | In the scheme | 4,357 |
| C02F1/06 | Flash evaporation | C02F1/00 | In the scheme | 4,339 |
| E03B7/075 | Arrangement of devices for control of pressure or flow rate | E03B | In the scheme | 4,265 |
| C02F1/766 | Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens by means of halogens other than chlorine or of halogenated compounds containing halogen other than chlorine | C02F1/00 | In the scheme | 4,232 |
| C02F1/681 | Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water by addition of solid materials for removing an oily layer on water | C02F1/00 | In the scheme | 4,222 |
| E03B11/00 | Arrangements or adaptations of tanks for water supply | E03B | In the scheme | 3,823 |
| C02F5/02 | Softening water by precipitation of the hardness | C02F5/00 | In the scheme | 3,659 |
| C02F1/4602 | Treatment of water, waste water, or sewage by electrochemical methods for prevention or elimination of deposits | C02F1/00 | In the scheme | 3,651 |
| C02F1/4676 | Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electroreduction | C02F1/00 | In the scheme | 3,625 |
| C02F1/22 | Treatment of water, waste water, or sewage by freezing | C02F1/00 | In the scheme | 3,619 |
| C02F1/385 | Treatment of water, waste water, or sewage by centrifugal separation by centrifuging suspensions | C02F1/00 | In the scheme | 3,523 |
| E03B7/074 | Arrangement of water treatment devices | E03B | In the scheme | 3,366 |
| C02F1/002 | Processes for the treatment of water whereby the filtration technique is of importance using small portable filters for producing potable water, e.g. personal travel or emergency equipment, survival kits, combat gear | C02F1/00 | In the scheme | 3,256 |
| C02F1/041 | Treatment of water, waste water, or sewage by heating by distillation or evaporation by means of vapour compression | C02F1/00 | In the scheme | 3,252 |
| C02F1/685 | Devices for dosing the additives | C02F1/00 | In the scheme | 3,192 |
| E03B2001/045 | Greywater supply systems using household water | E03B | In the scheme | 3,083 |
| C02F1/46114 | Electrodes in particulate form or with conductive and/or non conductive particles between them | C02F1/00 | In the scheme | 3,068 |
| E03B3/03 | Special vessels for collecting or storing rain-water for use in the household, e.g. water-butts | E03B | In the scheme | 3,043 |
| C02F1/08 | Thin film evaporation | C02F1/00 | In the scheme | 3,014 |
| C02F1/005 | Systems or processes based on supernatural or anthroposophic principles, cosmic or terrestrial radiation, geomancy or rhabdomancy | C02F1/00 | In the scheme | 2,974 |
| E03B1/04 | Methods or layout of installations for water supply for domestic or like local supply | E03B | In the scheme | 2,967 |
| E03B7/12 | Devices preventing bursting of pipes by freezing by preventing freezing | E03B | In the scheme | 2,955 |
| E03B7/078 | Combined units with different devices; Arrangement of different devices with respect to each other | E03B | In the scheme | 2,950 |
| C02F2001/46157 | Perforated or foraminous electrodes | C02F1/00 | In the scheme | 2,813 |
| E03B7/071 | Arrangement of safety devices in domestic pipe systems, e.g. devices for automatic shut-off | E03B | In the scheme | 2,807 |
| C02F1/447 | Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by membrane distillation | C02F1/00 | In the scheme | 2,803 |
| C02F2001/46119 | Cleaning the electrodes | C02F1/00 | In the scheme | 2,709 |
| E03B7/072 | Arrangement of flowmeters | E03B | In the scheme | 2,683 |
| C02F1/4604 | Treatment of water, waste water, or sewage by electrochemical methods for desalination of seawater or brackish water | C02F1/00 | In the scheme | 2,676 |
| C02F1/12 | Spray evaporation | C02F1/00 | In the scheme | 2,645 |
| E03B1/041 | Greywater supply systems | E03B | In the scheme | 2,636 |
| C02F2001/46161 | Porous electrodes | C02F1/00 | In the scheme | 2,600 |
| C02F1/465 | Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electroflotation | C02F1/00 | In the scheme | 2,580 |
| C02F1/586 | Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen | C02F1/00 | In the scheme | 2,475 |
| E03B9/02 | Hydrants; Arrangements of valves therein; Keys for hydrants | E03B | In the scheme | 2,470 |
| C02F1/025 | Thermal hydrolysis | C02F1/00 | In the scheme | 2,403 |
| C02F1/5272 | Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using specific organic precipitants | C02F1/00 | In the scheme | 2,393 |
| C02F1/10 | Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium | C02F1/00 | In the scheme | 2,376 |
| E03B7/08 | Arrangement of draining devices, e.g. manual shut-off valves | E03B | In the scheme | 2,353 |
| C02F1/4606 | Treatment of water, waste water, or sewage by electrochemical methods for producing oligodynamic substances to disinfect the water | C02F1/00 | In the scheme | 2,348 |
| E03B7/09 | Component parts or accessories | E03B | In the scheme | 2,314 |
| C02F1/46176 | Galvanic cells | C02F1/00 | In the scheme | 2,303 |
| C02F2001/46185 | Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water only anodic or acidic water, e.g. for oxidizing or sterilizing | C02F1/00 | In the scheme | 2,209 |
| E03B11/02 | Arrangements or adaptations of tanks for water supply for domestic or like local water supply | E03B | In the scheme | 2,205 |
| E03B3/04 | Methods or installations for obtaining or collecting drinking water or tap water from surface water | E03B | In the scheme | 2,136 |
| C02F1/583 | Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing fluoride or fluorine compounds | C02F1/00 | In the scheme | 2,120 |
| E03B7/04 | Domestic or like local pipe systems | E03B | In the scheme | 2,086 |
| C02F2001/427 | Treatment of water, waste water, or sewage by ion-exchange using mixed beds | C02F1/00 | In the scheme | 2,075 |
| E03B11/10 | Arrangements or adaptations of tanks for water supply for public or like main water supply | E03B | In the scheme | 2,072 |
| E03B1/042 | Details thereof, e.g. valves or pumps | E03B | In the scheme | 2,068 |
| E03B7/095 | Component holders or housings, e.g. boundary boxes | E03B | In the scheme | 2,057 |
| C02F1/484 | Treatment of water, waste water, or sewage with magnetic or electric fields using electromagnets | C02F1/00 | In the scheme | 2,055 |
| C02F2001/4619 | Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water only cathodic or alkaline water, e.g. for reducing | C02F1/00 | In the scheme | 2,017 |
| C02F1/482 | Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets located on the outer wall of the treatment device, i.e. not in contact with the liquid to be treated, e.g. detachable | C02F1/00 | In the scheme | 2,007 |
| E03B1/02 | Methods or layout of installations for water supply for public or like main supply for industrial use | E03B | In the scheme | 1,996 |
| E03B2001/047 | Greywater supply systems using rainwater | E03B | In the scheme | 1,929 |
Match: Direct
The capability is itself a technology or a kind of physical system, and the classification names it. C02F1/00 and C02F9/00 do not separate drinking water from waste water and are shared with Wastewater & Sanitation; only CPC codes under C02F2103/00 can tell them apart. The crosswalk is a first pass that nobody has reviewed.