- 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 4/02 - Fluid rotary type drives
Patent holdings for IPC class E21B 4/02
Total number of patents in this class: 1269
10-year publication summary
|
99
|
107
|
87
|
76
|
76
|
62
|
69
|
52
|
59
|
33
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21292 |
231 |
| Schlumberger Technology Corporation | 11940 |
90 |
| Schlumberger Canada Limited | 7610 |
62 |
| National Oilwell Varco, L.P. | 1700 |
62 |
| Services Petroliers Schlumberger | 6022 |
50 |
| Thru Tubing Solutions, Inc. | 407 |
48 |
| Schlumberger Technology B.v. | 5287 |
44 |
| Baker Hughes Incorporated | 4883 |
43 |
| Saudi Arabian Oil Company | 14369 |
32 |
| Smith International, Inc. | 690 |
30 |
| Schlumberger Holdings Limited | 2660 |
29 |
| Prad Research and Development Limited | 2642 |
28 |
| Baker Hughes, a GE Company, LLC | 2022 |
17 |
| Weatherford Technology Holdings, LLC | 2166 |
14 |
| Impulse Downhole Solutions Ltd. | 53 |
13 |
| Rival Downhole Tools LC | 49 |
13 |
| Baker Hughes Oilfield Operations, LLC | 2555 |
11 |
| Upwing Energy, Inc. | 61 |
11 |
| Turbo Drill Industries, Inc. | 69 |
10 |
| Abaco Drilling Technologies LLC | 43 |
10 |
| Other owners | 421 |