- 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: 1117
10-year publication summary
|
139
|
79
|
52
|
89
|
40
|
38
|
46
|
25
|
54
|
31
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21078 |
101 |
| Schlumberger Technology Corporation | 11054 |
53 |
| Schlumberger Canada Limited | 7432 |
34 |
| Hypersciences, Inc. | 42 |
34 |
| Baker Hughes Incorporated | 5175 |
30 |
| Services Petroliers Schlumberger | 5884 |
27 |
| Schlumberger Technology B.v. | 5223 |
25 |
| Saudi Arabian Oil Company | 13656 |
24 |
| National Oilwell Varco, L.P. | 1699 |
23 |
| BASF SE | 21087 |
21 |
| Baker Hughes Holdings LLC | 3002 |
20 |
| Evolution Engineering Inc. | 300 |
18 |
| Prad Research and Development Limited | 2687 |
16 |
| Bauer Maschinen GmbH | 228 |
15 |
| Schlumberger Holdings Limited | 2790 |
14 |
| Nabors Drilling Technologies USA, Inc. | 564 |
14 |
| Eavor Technologies Inc. | 94 |
14 |
| Chevron U.S.A. Inc. | 4018 |
12 |
| Weatherford Technology Holdings, LLC | 2033 |
12 |
| Motive Drilling Technologies, Inc. | 103 |
12 |
| Other owners | 598 |