- 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 7/04 - Directional drilling
Patent holdings for IPC class E21B 7/04
Total number of patents in this class: 2410
10-year publication summary
|
200
|
190
|
195
|
178
|
177
|
158
|
177
|
144
|
151
|
128
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20944 |
410 |
| Schlumberger Technology Corporation | 10868 |
186 |
| Saudi Arabian Oil Company | 13349 |
84 |
| The Charles Machine Works, Inc. | 405 |
82 |
| Merlin Technology, Inc. | 162 |
71 |
| Vermeer Manufacturing Company | 638 |
71 |
| Motive Drilling Technologies, Inc. | 103 |
62 |
| Schlumberger Canada Limited | 7363 |
58 |
| Services Petroliers Schlumberger | 5827 |
45 |
| Nabors Drilling Technologies USA, Inc. | 561 |
41 |
| Tracto-Technik GmbH & Co. KG | 170 |
41 |
| Schlumberger Technology B.v. | 5187 |
36 |
| Baker Hughes Incorporated | 5251 |
32 |
| Baker Hughes, a GE Company, LLC | 2111 |
32 |
| Landmark Graphics Corporation | 1523 |
29 |
| Evolution Engineering Inc. | 301 |
21 |
| Scientific Drilling International, Inc. | 168 |
18 |
| Baker Hughes Holdings LLC | 3001 |
18 |
| Schlumberger Holdings Limited | 2808 |
17 |
| ConocoPhillips Company | 1675 |
17 |
| Other owners | 1039 |