- All sections
- E - Fixed constructions
- E21B - Earth or rock drillingobtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 7/02 - Drilling rigs characterised by means for land transport, e.g. skid mounting or wheel mounting
Patent holdings for IPC class E21B 7/02
Total number of patents in this class: 1390
10-year publication summary
|
119
|
112
|
120
|
121
|
110
|
118
|
95
|
117
|
114
|
64
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Mining and Construction Oy | 889 |
191 |
| Epiroc Rock Drills Aktiebolag | 662 |
102 |
| National Oilwell Varco, L.P. | 1701 |
48 |
| Halliburton Energy Services, Inc. | 21305 |
43 |
| Caterpillar Global Mining Equipment LLC | 181 |
39 |
| Nabors Drilling Technologies USA, Inc. | 573 |
35 |
| Soilmec S.p.A. | 75 |
32 |
| Schlumberger Technology Corporation | 11839 |
23 |
| Bauer Maschinen GmbH | 246 |
22 |
| Technological Resources Pty. Limited | 442 |
21 |
| Vermeer Manufacturing Company | 674 |
20 |
| Schlumberger Canada Limited | 7609 |
19 |
| Joy Global Underground Mining LLC | 344 |
19 |
| Caterpillar Inc. | 10285 |
15 |
| Services Petroliers Schlumberger | 6028 |
15 |
| Joy Global Surface Mining Inc | 371 |
15 |
| Schlumberger Technology B.v. | 5295 |
13 |
| The Charles Machine Works, Inc. | 418 |
13 |
| Sandvik Intellectual Property AB | 1394 |
12 |
| Epiroc Drilling Solutions, LLC | 42 |
12 |
| Other owners | 681 |