- All sections
- E - Fixed constructions
- E21B - Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 34/06 - Valve arrangements for boreholes or wells in wells
Patent holdings for IPC class E21B 34/06
Total number of patents in this class: 4352
10-year publication summary
|
469
|
397
|
408
|
367
|
313
|
325
|
295
|
236
|
191
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20403 |
1009 |
| Schlumberger Technology Corporation | 10217 |
261 |
| Baker Hughes Incorporated | 5514 |
229 |
| Saudi Arabian Oil Company | 12390 |
168 |
| Schlumberger Canada Limited | 7137 |
157 |
| Baker Hughes, a GE Company, LLC | 2138 |
152 |
| Services Petroliers Schlumberger | 5616 |
135 |
| Weatherford Technology Holdings, LLC | 2107 |
133 |
| Schlumberger Technology B.v. | 5058 |
131 |
| Baker Hughes Oilfield Operations, LLC | 2105 |
123 |
| NCS Multistage Inc. | 178 |
84 |
| Baker Hughes Holdings LLC | 3013 |
71 |
| Schlumberger Holdings Limited | 2870 |
57 |
| Prad Research and Development Limited | 2696 |
55 |
| ExxonMobil Upstream Research Company | 2456 |
37 |
| Thru Tubing Solutions, Inc. | 364 |
33 |
| Metrol Technology Limited | 89 |
30 |
| Aramco Services Company | 3735 |
26 |
| Geodynamics, Inc. | 198 |
25 |
| Chevron U.S.A. Inc. | 3844 |
24 |
| Other owners | 1412 |