← Capabilities
- International families
- 4,4382015 to 2024
- Leading country
- China2.4× the next
- All families
- 64khome 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
China
United States
Germany
Australia
South Africa
Sweden
Canada
Finland
South Korea
United Kingdom
1,624
664
351
271
185
145
130
125
123
101
| 2000 to 2025 | ||||||
|---|---|---|---|---|---|---|
| 1 | China | 1,624 | 36.6% | 2.0× | 56,316 | |
| 2 | United States | 664 | 15.0% | 0.6× | 1,079 | |
| 3 | Germany | 351 | 7.9% | 0.5× | 466 | |
| 4 | Australia | 271 | 6.1% | 0.9× | 421 | |
| 5 | South Africa | 185 | 4.2% | 0.6× | 214 | |
| 6 | Sweden | 145 | 3.3% | 0.9× | 156 | |
| 7 | Canada | 130 | 2.9% | 0.7× | 175 | |
| 8 | Finland | 125 | 2.8% | 1.5× | 136 | |
| 9 | South Korea | 123 | 2.8% | 0.9× | 1,718 | |
| 10 | United Kingdom | 101 | 2.3% | 0.9× | 140 | |
| 11 | Japan | 94 | 2.1% | 1.0× | 1,021 | |
| 12 | France | 83 | 1.9% | 0.7× | 106 | |
| 13 | Austria | 49 | 1.1% | 1.0× | 57 | |
| 14 | Switzerland | 46 | 1.0% | 0.7× | 54 | |
| 15 | Russia | 39 | 0.9% | 0.4× | 1,168 | |
| 16 | Singapore | 35 | 0.8% | 1.7× | 44 | |
| 17 | Norway | 35 | 0.8% | 1.7× | 52 | |
| 18 | Netherlands | 32 | 0.7% | 0.5× | 39 | |
| 19 | Italy | 30 | 0.7% | 1.1× | 61 | |
| 20 | Spain | 25 | 0.6% | 0.9× | 30 | |
| 21 | Poland | 25 | 0.6% | 1.8× | 476 | |
| 22 | Liechtenstein | 24 | 0.5% | 0.8× | 24 | |
| 23 | Türkiye | 18 | 0.4% | 2.0× | 41 | |
| 24 | Taiwan | 15 | 0.3% | 0.5× | 26 | |
| 25 | Brazil | 13 | 0.3% | 0.3× | 32 | |
| 26 | Israel | 12 | 0.3% | 2.0× | 15 | |
| 27 | Belgium | 11 | 0.2% | 0.8× | 11 | |
| 28 | India | 8 | 0.2% | 1.0× | 13 | |
| 29 | Saudi Arabia | 7 | 0.2% | 0.8× | 8 | |
| 30 | Mexico | 7 | 0.2% | 0.0× | 11 | |
| 31 | Ireland | 5 | 0.1% | 0.7× | 6 | |
| 32 | Denmark | 4 | 0.1% | 0.3× | 4 | |
| 33 | Hong Kong | 4 | 0.1% | 3.0× | 5 | |
| 34 | Czechia | 4 | 0.1% | 0.0× | 12 | |
| 35 | New Zealand | 3 | 0.1% | 0.0× | 3 | |
| 36 | Luxembourg | 2 | 0.0% | 0.0× | 2 | |
| 37 | Malaysia | 1 | 0.0% | 0.0× | 1 | |
| 38 | Portugal | 0 | 0.0% | – | 1 | |
| 39 | Hungary | 0 | 0.0% | – | 3 |
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 Mining & Quarrying. Names are as held in the source and are not consolidated across subsidiaries.
Global
4,438 international families
UNIV CHINA MINING · China
UNIV SHANDONG SCIENCE & TECH · China
UNIV CHINA MINING & TECHNOLOGY · China
SANDVIK MINING & CONSTRUCTION OY · Finland
JOY GLOBAL UNDERGROUND MINING LLC · United States
UNIV ANHUI SCI & TECHNOLOGY · China
340
135
114
110
86
86
China
1,624 international families
UNIV CHINA MINING
UNIV SHANDONG SCIENCE & TECH
UNIV CHINA MINING & TECHNOLOGY
UNIV ANHUI SCI & TECHNOLOGY
UNIV CHINA MINING & TECHNOLOGY BEIJING
UNIV HENAN POLYTECHNIC
340
135
114
86
38
33
United States
664 international families
JOY GLOBAL UNDERGROUND MINING LLC
CATERPILLAR INC
JOY MM DELAWARE INC
HALLIBURTON ENERGY SERVICES INC
CATERPILLAR PAVING PRODUCTS INC
JOY GLOBAL SURFACE MINING INC
86
53
50
30
24
24
Germany
351 international families
WIRTGEN GMBH
THYSSENKRUPP AG
HERRENKNECHT AG
CATERPILLAR GLOBAL MINING EUROPE GMBH
BOMAG GMBH
THYSSENKRUPP IND SOLUTIONS AG
66
26
25
23
18
18
Australia
271 international families
SANDVIK MINING AND CONSTRUCTION AUSTRALIA PRODUCTION/SUPPLY PTY LTD
SANDVIK MINING AND CONSTRUCTION AUSTRALIA PTY LTD
TECH RESOURCES PTY LTD
COMMW SCIENT IND RES ORG
Caterpillar Underground Mining Pty Ltd
DSI UNDERGROUND AUSTRALIA PTY LTD
17
15
13
11
11
11
South Africa
185 international families
DETNET SOUTH AFRICA PTY LTD
NCM INNOVATIONS PTY LTD
DETNET SOUTH AFRICA (PTY) LTD
EPIROC HOLDINGS SOUTH AFRICA PTY LTD
INNOVATIVE MINING PRODUCTS PTY LTD
NCM INNOVATIONS (PTY) LTD
55
27
19
13
10
10
Similar capabilities
The nine capabilities that share the most international patent families with Mining & Quarrying, 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
Roads & Bridges
3.5% shared · 893 families in both
China
United States
Japan
Germany
South Korea
4,101
4,012
3,973
2,790
1,426
Strategic Infrastructure
Oil & Gas Extraction
2.6% shared · 1,059 families in both
United States
China
Saudi Arabia
France
Norway
17,083
4,363
2,572
1,718
1,707
National Security
Land Fires
2.4% shared · 137 families in both
United States
Germany
France
United Kingdom
South Korea
357
232
127
113
93
National Security
Operational Sustainment & War Reserves
1.4% shared · 65 families in both
United States
Germany
France
United Kingdom
China
88
67
32
24
23
Critical Technology
Energetic Materials
1.3% shared · 63 families in both
United States
France
China
Germany
Japan
166
62
59
59
41
Strategic Infrastructure
Military Bases & Installations
1.1% shared · 65 families in both
United States
Germany
South Korea
United Kingdom
Japan
353
218
111
100
84
Strategic Infrastructure
Hydropower
0.9% shared · 75 families in both
China
United States
Japan
South Korea
Germany
849
601
301
249
242
National Security
Combined Arms Manoeuvre
0.9% shared · 75 families in both
United States
Germany
France
Türkiye
United Kingdom
1,319
502
222
212
211
Strategic Infrastructure
Manufacturing Facilities
0.8% shared · 52 families in both
United States
France
Germany
United Kingdom
Japan
892
274
266
193
97
Crosswalk
How Mining & Quarrying is matched to the patent classifications. The entries below were chosen for it; each stands for itself and everything beneath it in the scheme, 444 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 |
|---|---|---|---|---|---|
| E21C | Mining or quarrying | Mining and quarrying methods and machines | 197 | 155 | 162,790 |
| E21F | Safety devices, transport, filling-up, rescue, ventilation, or draining in or of mines or tunnels | Mine safety, ventilation, drainage, transport and backfilling | 73 | 51 | 228,850 |
| E21D1/00 | Sinking shafts | Sinking mine shafts | 11 | 11 | 9,013 |
| E21D15/00 | Props; Chocks, e.g. made of flexible containers filled with backfilling material | Props and chocks supporting mine workings | 69 | 39 | 33,573 |
| E21D20/00 | Setting anchoring-bolts | Setting rock bolts in mine roofs and walls | 9 | 2 | 40,042 |
| E21D21/00 | Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection | Rock bolts for galleries and longwall workings | 16 | 2 | 29,028 |
| E21D23/00 | Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor | Powered roof supports for longwall mining | 59 | 14 | 44,249 |
| F42D | Blasting | Blasting methods for rock, mines and quarries | 33 | 32 | 72,951 |
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 Mining & Quarrying: 467 codes on 383,616 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 |
|---|---|---|---|---|
| E21F17/18 | Special adaptations of signalling or alarm devices | E21F | In the scheme | 17,234 |
| E21F17/00 | Methods or devices for use in mines or tunnels, not covered elsewhere | E21F | In the scheme | 10,697 |
| F42D3/04 | Particular applications of blasting techniques for rock blasting | F42D | In the scheme | 8,951 |
| E21F7/00 | Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose | E21F | In the scheme | 6,803 |
| E21D20/003 | Machines for drilling anchor holes and setting anchor bolts | E21D20/00 | In the scheme | 6,691 |
| E21D21/0026 | Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts | E21D21/00 | In the scheme | 6,046 |
| E21D20/00 | Setting anchoring-bolts | E21D20/00 | In the scheme | 5,753 |
| F42D1/00 | Blasting methods or apparatus, e.g. loading or tamping | F42D | In the scheme | 5,711 |
| E21C41/18 | Methods of underground mining; Layouts therefor for brown or hard coal | E21C | In the scheme | 5,397 |
| E21D20/02 | Setting anchoring-bolts with provisions for grouting | E21D20/00 | In the scheme | 4,727 |
| E21D21/008 | Anchoring or tensioning means | E21D21/00 | In the scheme | 4,708 |
| E21F15/00 | Methods or devices for placing filling-up materials in underground workings | E21F | In the scheme | 4,453 |
| F42D1/08 | Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor | F42D | In the scheme | 4,314 |
| E21F16/02 | Drainage of tunnels | E21F | In the scheme | 4,031 |
| F42D5/045 | Detonation-wave absorbing or damping means | F42D | In the scheme | 3,708 |
| E21F11/00 | Rescue devices or other safety devices, e.g. safety chambers or escape ways | E21F | In the scheme | 3,522 |
| F42D1/05 | Electric circuits for blasting | F42D | In the scheme | 3,438 |
| E21F5/00 | Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires | E21F | In the scheme | 3,324 |
| E21C35/18 | Mining picks; Holders therefor | E21C | In the scheme | 3,273 |
| E21C50/00 | Obtaining minerals from underwater, not otherwise provided for | E21C | In the scheme | 3,227 |
| E21F5/04 | Spraying barriers | E21F | In the scheme | 3,196 |
| F42D3/00 | Particular applications of blasting techniques | F42D | In the scheme | 3,178 |
| E21C35/00 | Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00 | E21C | In the scheme | 3,132 |
| F42D1/055 | Electric circuits for blasting specially adapted for firing multiple charges with a time delay | F42D | In the scheme | 3,127 |
| E21D23/04 | Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor | E21D23/00 | In the scheme | 3,121 |
| E21C35/183 | Mining picks; Holders therefor with inserts or layers of wear-resisting material | E21C | In the scheme | 3,116 |
| E21F15/005 | Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material | E21F | In the scheme | 3,112 |
| E21C35/20 | General features of equipment for removal of chippings, e.g. for loading on conveyor | E21C | In the scheme | 2,964 |
| E21D21/0093 | Accessories | E21D21/00 | In the scheme | 2,931 |
| E21C27/24 | Mineral freed by means not involving slitting by milling means acting on the full working face, i.e. the rotary axis of the tool carrier being substantially parallel to the working face | E21C | In the scheme | 2,913 |
| F42D1/10 | Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure | F42D | In the scheme | 2,894 |
| F42D1/04 | Arrangements for ignition | F42D | In the scheme | 2,849 |
| E21D23/16 | Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices | E21D23/00 | In the scheme | 2,786 |
| E21C41/16 | Methods of underground mining; Layouts therefor | E21C | In the scheme | 2,773 |
| E21D21/00 | Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection | E21D21/00 | In the scheme | 2,655 |
| E21F13/00 | Transport specially adapted to underground conditions | E21F | In the scheme | 2,646 |
| F42D1/045 | Arrangements for electric ignition | F42D | In the scheme | 2,607 |
| E21F5/20 | Drawing-off or depositing dust | E21F | In the scheme | 2,600 |
| E21D20/028 | Devices or accesories for injecting a grouting liquid in a bore-hole | E21D20/00 | In the scheme | 2,588 |
| E21D15/44 | Hydraulic, pneumatic, or hydraulic-pneumatic props | E21D15/00 | In the scheme | 2,548 |
| E21C35/19 | Means for fixing picks or holders | E21C | In the scheme | 2,545 |
| E21F16/00 | Drainage | E21F | In the scheme | 2,527 |
| E21C41/22 | Methods of underground mining; Layouts therefor for ores, e.g. mining placers | E21C | In the scheme | 2,495 |
| E21F1/003 | Ventilation of traffic tunnels | E21F | In the scheme | 2,456 |
| F42D5/04 | Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless | F42D | In the scheme | 2,359 |
| E21C25/10 | Rods; Drums | E21C | In the scheme | 2,357 |
| E21F1/00 | Ventilation of mines or tunnels; Distribution of ventilating currents | E21F | In the scheme | 2,352 |
| E21D21/0033 | Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube | E21D21/00 | In the scheme | 2,331 |
| E21F1/08 | Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators | E21F | In the scheme | 2,329 |
| E21C35/24 | Remote control specially adapted for machines for slitting or completely freeing the mineral | E21C | In the scheme | 2,272 |
| F42D1/043 | Connectors for detonating cords and ignition tubes, e.g. Nonel tubes | F42D | In the scheme | 2,267 |
| E21C31/02 | Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices | E21C | In the scheme | 2,181 |
| E21C27/02 | Machines which completely free the mineral from the seam solely by slitting | E21C | In the scheme | 2,128 |
| E21C35/197 | Means for fixing picks or holders using sleeves, rings or the like, as main fixing elements | E21C | In the scheme | 2,114 |
| E21F13/06 | Transport of mined material at or adjacent to the working face | E21F | In the scheme | 1,976 |
| E21C35/302 | Measuring, signaling or indicating specially adapted for machines for slitting or completely freeing the mineral | E21C | In the scheme | 1,963 |
| E21D20/021 | Grouting with inorganic components, e.g. cement | E21D20/00 | In the scheme | 1,926 |
| E21F17/16 | Modification of mine passages or chambers for storage purposes, especially for liquids or gases | E21F | In the scheme | 1,914 |
| E21D20/025 | Grouting with organic components, e.g. resin | E21D20/00 | In the scheme | 1,853 |
| E21F1/04 | Air ducts | E21F | In the scheme | 1,852 |
| E21F3/00 | Cooling or drying of air | E21F | In the scheme | 1,805 |
| E21C35/1837 | Mining picks; Holders therefor with inserts or layers of wear-resisting material characterised by the shape | E21C | In the scheme | 1,804 |
| E21C35/12 | Guiding the machine along a conveyor for the cut material | E21C | In the scheme | 1,732 |
| E21F1/006 | Ventilation at the working face of galleries or tunnels | E21F | In the scheme | 1,692 |
| E21C25/06 | Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate | E21C | In the scheme | 1,676 |
| E21C47/00 | Machines for obtaining or the removal of materials in open-pit mines | E21C | In the scheme | 1,659 |
| E21F15/08 | Filling-up hydraulically or pneumatically | E21F | In the scheme | 1,637 |
| E21C35/22 | Equipment for preventing the formation of, or for removal of, dust | E21C | In the scheme | 1,635 |
| F42D5/00 | Safety arrangements | F42D | In the scheme | 1,634 |
| E21F5/02 | Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying | E21F | In the scheme | 1,577 |
| E21C35/282 | Autonomous machines; Autonomous operations | E21C | In the scheme | 1,553 |
| E21C37/12 | Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by injecting into the borehole a liquid, either initially at high pressure or subsequently subjected to high pressure, e.g. by pulses, by explosive cartridges acting on the liquid | E21C | In the scheme | 1,537 |
| F42D1/18 | Plugs for boreholes | F42D | In the scheme | 1,488 |
| E21D21/006 | Anchoring-bolts made of cables or wires | E21D21/00 | In the scheme | 1,487 |
| E21D23/26 | Hydraulic or pneumatic control | E21D23/00 | In the scheme | 1,485 |
| E21F17/02 | Suspension devices for tubes or the like, e.g. for ventilating ducts | E21F | In the scheme | 1,453 |
| E21F13/02 | Transport of mined mineral in galleries | E21F | In the scheme | 1,433 |
| E21D23/12 | Control, e.g. using remote control | E21D23/00 | In the scheme | 1,428 |
| E21D20/026 | Cartridges; Grouting charges | E21D20/00 | In the scheme | 1,400 |
| E21C41/26 | Methods of surface mining; Layouts therefor | E21C | In the scheme | 1,398 |
| E21F17/103 | Dams, e.g. for ventilation | E21F | In the scheme | 1,397 |
| E21D21/0053 | Anchoring-bolts in the form of lost drilling rods | E21D21/00 | In the scheme | 1,354 |
| E21F15/06 | Filling-up mechanically | E21F | In the scheme | 1,354 |
| E21C27/34 | Machine propelled along the working face by cable or chain | E21C | In the scheme | 1,351 |
| E21C39/00 | Devices for testing in situ the hardness or other properties of minerals, e.g. for giving information as to the selection of suitable mining tools | E21C | In the scheme | 1,335 |
| E21C29/22 | Propulsion of machines for slitting or completely freeing the mineral from the seam by wheels, endless tracks or the like | E21C | In the scheme | 1,300 |
| E21D1/06 | Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters | E21D1/00 | In the scheme | 1,300 |
| E21D21/004 | Bolts held in the borehole by friction all along their length, without additional fixing means | E21D21/00 | In the scheme | 1,278 |
| E21F13/066 | Scraper chain conveyors | E21F | In the scheme | 1,269 |
| E21F17/185 | Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence | E21F | In the scheme | 1,252 |
| E21C37/00 | Other methods or devices for dislodging with or without loading | E21C | In the scheme | 1,235 |
| E21C35/188 | Mining picks; Holders therefor characterised by adaptations to use an extraction tool | E21C | In the scheme | 1,223 |
| E21D21/0086 | Bearing plates | E21D21/00 | In the scheme | 1,223 |
| E21F17/06 | Distributing electric power; Cable networks; Conduits for cables | E21F | In the scheme | 1,221 |
| E21C27/22 | Mineral freed by means not involving slitting by rotary drills with breaking-down means, e.g. wedge-shaped drills, i.e. the rotary axis of the tool carrier being substantially perpendicular to the working face, e.g. MARIETTA-type | E21C | In the scheme | 1,218 |
| E21D21/0006 | Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material | E21D21/00 | In the scheme | 1,211 |
| E21D21/02 | Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection having means for indicating tension | E21D21/00 | In the scheme | 1,210 |
| E21C35/187 | Mining picks; Holders therefor with arrangement of fluid-spraying nozzles | E21C | In the scheme | 1,202 |
| E21C25/16 | Machines slitting solely by one or more rotating saws, cutting discs, or wheels | E21C | In the scheme | 1,199 |
| E21C35/1831 | Fixing methods or devices | E21C | In the scheme | 1,194 |
| F42D1/22 | Methods for holding or positioning for blasting cartridges or tamping cartridges | F42D | In the scheme | 1,170 |
| E21D21/0046 | Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts formed by a plurality of elements arranged longitudinally | E21D21/00 | In the scheme | 1,162 |
| E21F13/006 | Equipment transport systems | E21F | In the scheme | 1,149 |
| E21D15/50 | Component parts or details of props | E21D15/00 | In the scheme | 1,140 |
| E21F1/10 | Air doors | E21F | In the scheme | 1,136 |
| E21D23/0409 | Aligning or guiding means for the supports or for the constitutive parts of the supports | E21D23/00 | In the scheme | 1,128 |
| E21D23/06 | Special mine caps or special tops of pit-props for permitting step-by-step movement | E21D23/00 | In the scheme | 1,106 |
| E21C25/60 | Slitting by jets of water or other liquid | E21C | In the scheme | 1,081 |
| E21C29/02 | Propulsion of machines for slitting or completely freeing the mineral from the seam by means on the machine exerting a thrust against fixed supports | E21C | In the scheme | 1,071 |
| E21C35/04 | Safety devices | E21C | In the scheme | 1,068 |
| E21C35/191 | Means for fixing picks or holders for fixing holders | E21C | In the scheme | 1,068 |
| E21C35/23 | Distribution of spraying-fluids in rotating cutter-heads | E21C | In the scheme | 1,047 |
| E21D23/03 | Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support | E21D23/00 | In the scheme | 1,039 |
| E21D23/0052 | Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith | E21D23/00 | In the scheme | 1,033 |
| E21C25/18 | Saws; Discs; Wheels | E21C | In the scheme | 1,016 |
| E21D15/512 | Arrangement of valves | E21D15/00 | In the scheme | 979 |
| E21F13/04 | Transport of mined material in gravity inclines; in staple or inclined shafts | E21F | In the scheme | 969 |
| E21D20/006 | Machines for drilling anchor holes and setting anchor bolts having magazines for storing and feeding anchoring-bolts | E21D20/00 | In the scheme | 959 |
| E21F15/04 | Stowing mats; Goaf wire netting; Partition walls | E21F | In the scheme | 948 |
| E21C37/16 | Other methods or devices for dislodging with or without loading by fire-setting or by similar methods based on a heat effect | E21C | In the scheme | 936 |
| E21D1/03 | Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws | E21D1/00 | In the scheme | 931 |
| E21C35/1835 | Chemical composition or specific material | E21C | In the scheme | 891 |
| E21C35/06 | Equipment for positioning the whole machine in relation to its sub-structure | E21C | In the scheme | 878 |
| E21C41/00 | Methods of underground or surface mining; Layouts therefor | E21C | In the scheme | 875 |
| E21C37/14 | Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by compressed air; by gas blast; by gasifying liquids | E21C | In the scheme | 867 |
| E21D15/55 | Details of the ends of props of prop heads or feet | E21D15/00 | In the scheme | 867 |
| E21D21/0073 | Anchoring-bolts having an inflatable sleeve, e.g. hollow sleeve expanded by a fluid | E21D21/00 | In the scheme | 839 |
| E21D23/0004 | Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face | E21D23/00 | In the scheme | 814 |
| E21C27/32 | Mineral freed by means not involving slitting by adjustable or non-adjustable planing means with or without loading arrangements | E21C | In the scheme | 810 |
| E21F13/025 | Shuttle cars | E21F | In the scheme | 808 |
| E21C25/68 | Machines for making slits combined with equipment for removing, e.g. by loading, material won by other means | E21C | In the scheme | 803 |
| F42D1/02 | Arranging blasting cartridges to form an assembly | F42D | In the scheme | 799 |
| E21F13/08 | Shifting conveyors or other transport devices from one location at the working face to another | E21F | In the scheme | 785 |
| E21F15/02 | Supporting means, e.g. shuttering, for filling-up materials | E21F | In the scheme | 773 |
| E21C35/223 | Equipment associated with mining machines for sucking dust-laden air from the cutting area, with or without cleaning of the air | E21C | In the scheme | 753 |
| E21C31/00 | Driving means incorporated in machines for slitting or completely freeing the mineral from the seam | E21C | In the scheme | 751 |
| E21D23/08 | Advancing mechanisms | E21D23/00 | In the scheme | 742 |
| E21C27/28 | Mineral freed by means not involving slitting by percussive drills with breaking-down means, e.g. wedge-shaped tools | E21C | In the scheme | 740 |
| E21C31/08 | Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for adjusting parts of the machines | E21C | In the scheme | 734 |
| E21C41/24 | Methods of underground mining; Layouts therefor for oil-bearing deposits | E21C | In the scheme | 718 |
| E21C37/18 | Other methods or devices for dislodging with or without loading by electricity | E21C | In the scheme | 714 |
| E21F5/06 | Fluids used for spraying | E21F | In the scheme | 704 |
| E21F13/086 | Armoured conveyors shifting devices | E21F | In the scheme | 699 |
| E21D23/0034 | Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member | E21D23/00 | In the scheme | 698 |
| E21C35/193 | Means for fixing picks or holders using bolts as main fixing elements | E21C | In the scheme | 685 |
| E21F17/12 | Dam doors | E21F | In the scheme | 682 |
| F42D1/06 | Relative timing of multiple charges | F42D | In the scheme | 682 |
| E21D23/00 | Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor | E21D23/00 | In the scheme | 670 |
| E21C47/02 | Machines for obtaining or the removal of materials in open-pit mines for coal, brown coal, or the like | E21C | In the scheme | 662 |
| E21F15/10 | Hydraulic or pneumatic filling-up machines | E21F | In the scheme | 662 |
Match: Direct
The capability is itself a technology or a kind of physical system, and the classification names it. E21F and the rock-bolt entries also serve tunnelling; ore concentration is placed under Processing & Refining. The crosswalk is a first pass that nobody has reviewed.