- 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: 4242
10-year publication summary
|
379
|
469
|
397
|
408
|
367
|
313
|
321
|
294
|
226
|
70
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20165 |
992 |
| Schlumberger Technology Corporation | 9690 |
252 |
| Baker Hughes Incorporated | 5689 |
230 |
| Saudi Arabian Oil Company | 11322 |
160 |
| Schlumberger Canada Limited | 6913 |
153 |
| Baker Hughes, a GE Company, LLC | 2171 |
152 |
| Services Petroliers Schlumberger | 5426 |
132 |
| Weatherford Technology Holdings, LLC | 2135 |
131 |
| Schlumberger Technology B.v. | 4951 |
128 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
103 |
| NCS Multistage Inc. | 172 |
83 |
| Baker Hughes Holdings LLC | 3060 |
71 |
| Schlumberger Holdings Limited | 2947 |
57 |
| Prad Research and Development Limited | 2696 |
55 |
| ExxonMobil Upstream Research Company | 2525 |
38 |
| Thru Tubing Solutions, Inc. | 361 |
33 |
| Metrol Technology Limited | 85 |
27 |
| Geodynamics, Inc. | 203 |
26 |
| Welltec Oilfield Solutions AG | 140 |
26 |
| Aramco Services Company | 3504 |
25 |
| Other owners | 1368 |