- 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 34/06 - Valve arrangements for boreholes or wells in wells
Patent holdings for IPC class E21B 34/06
Total number of patents in this class: 4426
10-year publication summary
|
469
|
397
|
408
|
367
|
313
|
325
|
294
|
246
|
204
|
120
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20891 |
1058 |
| Schlumberger Technology Corporation | 10717 |
276 |
| Baker Hughes Incorporated | 5247 |
222 |
| Saudi Arabian Oil Company | 13155 |
172 |
| Schlumberger Canada Limited | 7296 |
161 |
| Baker Hughes, a GE Company, LLC | 2112 |
152 |
| Services Petroliers Schlumberger | 5788 |
140 |
| Schlumberger Technology B.v. | 5168 |
136 |
| Baker Hughes Oilfield Operations, LLC | 2301 |
131 |
| Weatherford Technology Holdings, LLC | 2023 |
126 |
| NCS Multistage Inc. | 177 |
86 |
| Baker Hughes Holdings LLC | 3007 |
71 |
| Schlumberger Holdings Limited | 2828 |
56 |
| Prad Research and Development Limited | 2693 |
55 |
| ExxonMobil Upstream Research Company | 2397 |
37 |
| Thru Tubing Solutions, Inc. | 379 |
33 |
| Metrol Technology Limited | 84 |
29 |
| Aramco Services Company | 3969 |
27 |
| Chevron U.S.A. Inc. | 3955 |
25 |
| Geodynamics, Inc. | 192 |
23 |
| Other owners | 1410 |