- 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: 1344
10-year publication summary
|
107
|
94
|
100
|
104
|
97
|
102
|
80
|
97
|
88
|
22
|
| 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 | 859 |
183 |
| Epiroc Rock Drills Aktiebolag | 597 |
92 |
| National Oilwell Varco, L.P. | 1702 |
48 |
| Halliburton Energy Services, Inc. | 21115 |
43 |
| Caterpillar Global Mining Equipment LLC | 173 |
37 |
| Nabors Drilling Technologies USA, Inc. | 565 |
34 |
| Soilmec S.p.A. | 74 |
33 |
| Schlumberger Technology Corporation | 11298 |
23 |
| Technological Resources Pty. Limited | 449 |
21 |
| Vermeer Manufacturing Company | 657 |
20 |
| Bauer Maschinen GmbH | 231 |
18 |
| Joy Global Underground Mining LLC | 349 |
18 |
| Schlumberger Canada Limited | 7497 |
17 |
| Services Petroliers Schlumberger | 5931 |
16 |
| Joy Global Surface Mining Inc | 371 |
15 |
| Schlumberger Technology B.v. | 5251 |
14 |
| Caterpillar Inc. | 10010 |
13 |
| The Charles Machine Works, Inc. | 415 |
13 |
| Atlas Copco Rock Drills AB | 130 |
12 |
| Sandvik Intellectual Property AB | 1436 |
12 |
| Other owners | 662 |