- 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: 1390
10-year publication summary
|
66
|
69
|
72
|
84
|
97
|
108
|
119
|
81
|
67
|
59
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20991 |
355 |
| Schlumberger Technology Corporation | 10930 |
67 |
| Baker Hughes Oilfield Operations, LLC | 2344 |
62 |
| Saudi Arabian Oil Company | 13442 |
60 |
| Baker Hughes Incorporated | 5238 |
52 |
| Weatherford Technology Holdings, LLC | 2035 |
44 |
| Schlumberger Canada Limited | 7383 |
42 |
| Schlumberger Technology B.v. | 5191 |
36 |
| Services Petroliers Schlumberger | 5838 |
35 |
| Statoil Petroleum AS | 524 |
20 |
| Baker Hughes, a GE Company, LLC | 2109 |
20 |
| Schlumberger Holdings Limited | 2800 |
17 |
| Prad Research and Development Limited | 2690 |
17 |
| Swellfix UK Limited | 56 |
17 |
| Flowco Production Solutions, LLC | 67 |
16 |
| Baker Hughes Holdings LLC | 3015 |
15 |
| Floway Innovations Inc. | 14 |
14 |
| Aramco Services Company | 4042 |
13 |
| ExxonMobil Upstream Research Company | 2389 |
13 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 216 |
12 |
| Other owners | 463 |