- 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 34/08 - Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
Patent holdings for IPC class E21B 34/08
Total number of patents in this class: 1419
10-year publication summary
|
69
|
72
|
84
|
97
|
108
|
119
|
80
|
68
|
70
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21115 |
361 |
| Schlumberger Technology Corporation | 11298 |
70 |
| Baker Hughes Oilfield Operations, LLC | 2414 |
67 |
| Saudi Arabian Oil Company | 13865 |
62 |
| Baker Hughes Incorporated | 5098 |
52 |
| Schlumberger Canada Limited | 7497 |
43 |
| Weatherford Technology Holdings, LLC | 2034 |
42 |
| Schlumberger Technology B.v. | 5251 |
37 |
| Services Petroliers Schlumberger | 5931 |
36 |
| Statoil Petroleum AS | 492 |
20 |
| Baker Hughes, a GE Company, LLC | 2105 |
20 |
| Swellfix UK Limited | 58 |
18 |
| Schlumberger Holdings Limited | 2754 |
17 |
| Prad Research and Development Limited | 2684 |
17 |
| Flowco Production Solutions, LLC | 63 |
15 |
| Baker Hughes Holdings LLC | 2985 |
15 |
| Floway Innovations Inc. | 14 |
14 |
| Aramco Services Company | 4156 |
13 |
| ExxonMobil Upstream Research Company | 2356 |
13 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 224 |
12 |
| Other owners | 475 |