- 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 34/10 - Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
Patent holdings for IPC class E21B 34/10
Total number of patents in this class: 2473
10-year publication summary
|
184
|
206
|
201
|
190
|
166
|
191
|
175
|
147
|
166
|
30
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21242 |
554 |
| Baker Hughes Oilfield Operations, LLC | 2472 |
159 |
| Schlumberger Technology Corporation | 11549 |
137 |
| Baker Hughes Incorporated | 5033 |
124 |
| Weatherford Technology Holdings, LLC | 2074 |
113 |
| Schlumberger Canada Limited | 7571 |
78 |
| Baker Hughes, a GE Company, LLC | 2092 |
72 |
| Schlumberger Technology B.v. | 5270 |
68 |
| Services Petroliers Schlumberger | 5981 |
68 |
| Saudi Arabian Oil Company | 13949 |
53 |
| Baker Hughes Holdings LLC | 2994 |
29 |
| NCS Multistage Inc. | 173 |
26 |
| Tejas Research & Engineering, LLC | 28 |
23 |
| Thru Tubing Solutions, Inc. | 402 |
23 |
| Petroleum Technology Company AS | 94 |
22 |
| ExxonMobil Upstream Research Company | 2332 |
21 |
| Halliburton Manufacturing and Services Limited | 58 |
21 |
| Weatherford U.K. Limited | 71 |
21 |
| Innovex Downhole Solutions, LLC | 145 |
19 |
| Packers Plus Energy Services Inc. | 119 |
15 |
| Other owners | 827 |