- 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 34/08 - 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: 1293
10-year publication summary
90
|
79
|
76
|
81
|
91
|
109
|
121
|
146
|
90
|
24
|
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 |
321 |
Schlumberger Technology Corporation | 9690 |
58 |
Baker Hughes Incorporated | 5689 |
55 |
Saudi Arabian Oil Company | 11322 |
52 |
Baker Hughes Oilfield Operations, LLC | 1885 |
51 |
Weatherford Technology Holdings, LLC | 2135 |
44 |
Schlumberger Canada Limited | 6913 |
39 |
Schlumberger Technology B.v. | 4951 |
34 |
Services Petroliers Schlumberger | 5426 |
33 |
Statoil Petroleum AS | 555 |
23 |
Baker Hughes, a GE Company, LLC | 2171 |
20 |
Schlumberger Holdings Limited | 2947 |
17 |
Prad Research and Development Limited | 2696 |
17 |
Swellfix UK Limited | 51 |
15 |
Baker Hughes Holdings LLC | 3060 |
15 |
Flowco Production Solutions, LLC | 69 |
14 |
ExxonMobil Upstream Research Company | 2525 |
13 |
Aramco Services Company | 3504 |
11 |
Petroleum Technology Company AS | 98 |
11 |
Floway Innovations Inc. | 11 |
11 |
Other owners | 439 |