- 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 43/26 - Methods for stimulating production by forming crevices or fractures
Patent holdings for IPC class E21B 43/26
Total number of patents in this class: 7836
10-year publication summary
630
|
867
|
881
|
725
|
650
|
702
|
784
|
622
|
510
|
156
|
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 |
1316 |
Schlumberger Technology Corporation | 9690 |
407 |
Saudi Arabian Oil Company | 11322 |
333 |
Schlumberger Canada Limited | 6913 |
277 |
Services Petroliers Schlumberger | 5426 |
208 |
Schlumberger Technology B.v. | 4951 |
185 |
Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 396 |
169 |
Baker Hughes Holdings LLC | 3060 |
164 |
US Well Services LLC | 212 |
161 |
BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 196 |
141 |
Baker Hughes Incorporated | 5689 |
139 |
Baker Hughes, a GE Company, LLC | 2171 |
90 |
Schlumberger Holdings Limited | 2947 |
89 |
Aramco Services Company | 3504 |
89 |
Cameron International Corporation | 1305 |
89 |
Chevron U.S.A. Inc. | 3774 |
83 |
Prad Research and Development Limited | 2696 |
75 |
ConocoPhillips Company | 1657 |
71 |
ExxonMobil Upstream Research Company | 2525 |
60 |
SPM Oil & Gas Inc. | 304 |
60 |
Other owners | 3630 |