- 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 7/00 - Special methods or apparatus for drilling
Patent holdings for IPC class E21B 7/00
Total number of patents in this class: 1106
10-year publication summary
|
101
|
63
|
114
|
59
|
49
|
57
|
34
|
59
|
35
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21338 |
100 |
| Schlumberger Technology Corporation | 11818 |
54 |
| Schlumberger Canada Limited | 7606 |
33 |
| Hypersciences, Inc. | 38 |
30 |
| Baker Hughes Incorporated | 4934 |
29 |
| Services Petroliers Schlumberger | 6024 |
26 |
| Schlumberger Technology B.v. | 5298 |
24 |
| National Oilwell Varco, L.P. | 1699 |
23 |
| Saudi Arabian Oil Company | 14235 |
23 |
| BASF SE | 21303 |
21 |
| Baker Hughes Holdings LLC | 3023 |
20 |
| Evolution Engineering Inc. | 301 |
19 |
| Eavor Technologies Inc. | 109 |
16 |
| Bauer Maschinen GmbH | 245 |
15 |
| Prad Research and Development Limited | 2661 |
15 |
| Nabors Drilling Technologies USA, Inc. | 573 |
14 |
| Schlumberger Holdings Limited | 2699 |
13 |
| Weatherford Technology Holdings, LLC | 2155 |
13 |
| Chevron U.S.A. Inc. | 4140 |
12 |
| Motive Drilling Technologies, Inc. | 104 |
12 |
| Other owners | 594 |