- All sections
- E - Fixed constructions
- E21B - Earth or rock drilling; obtaining 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: 1151
10-year publication summary
|
87
|
96
|
119
|
112
|
120
|
121
|
111
|
114
|
80
|
32
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Mining and Construction Oy | 703 |
144 |
| Epiroc Rock Drills Aktiebolag | 405 |
49 |
| National Oilwell Varco, L.P. | 1604 |
48 |
| Halliburton Energy Services, Inc. | 20165 |
37 |
| Soilmec S.p.A. | 78 |
33 |
| Caterpillar Global Mining Equipment LLC | 115 |
32 |
| Nabors Drilling Technologies USA, Inc. | 533 |
29 |
| Schlumberger Technology Corporation | 9690 |
23 |
| Atlas Copco Rock Drills AB | 177 |
20 |
| Vermeer Manufacturing Company | 615 |
20 |
| Schlumberger Canada Limited | 6913 |
17 |
| Bauer Maschinen GmbH | 210 |
17 |
| Technological Resources Pty. Limited | 444 |
16 |
| Services Petroliers Schlumberger | 5426 |
15 |
| Sandvik Intellectual Property AB | 1634 |
14 |
| Joy Global Underground Mining LLC | 331 |
14 |
| Schlumberger Technology B.v. | 4951 |
13 |
| The Charles Machine Works, Inc. | 411 |
12 |
| Epiroc Drilling Solutions, LLC | 35 |
12 |
| Caterpillar Inc. | 8877 |
11 |
| Other owners | 575 |