- 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 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
Patent holdings for IPC class E21B 23/00
Total number of patents in this class: 2604
10-year publication summary
|
246
|
191
|
175
|
147
|
171
|
142
|
107
|
105
|
87
|
69
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20901 |
386 |
| Schlumberger Technology Corporation | 10727 |
133 |
| Baker Hughes Incorporated | 5241 |
131 |
| Saudi Arabian Oil Company | 13185 |
120 |
| Schlumberger Canada Limited | 7296 |
91 |
| Weatherford Technology Holdings, LLC | 2023 |
80 |
| Schlumberger Technology B.v. | 5165 |
78 |
| Services Petroliers Schlumberger | 5787 |
78 |
| Baker Hughes, a GE Company, LLC | 2112 |
68 |
| Baker Hughes Holdings LLC | 3006 |
58 |
| Baker Hughes Oilfield Operations, LLC | 2305 |
57 |
| Cameron International Corporation | 1332 |
48 |
| Welltec AS | 297 |
42 |
| Aramco Services Company | 3976 |
39 |
| Schlumberger Holdings Limited | 2822 |
38 |
| Thru Tubing Solutions, Inc. | 379 |
35 |
| Prad Research and Development Limited | 2693 |
33 |
| Enventure Global Technology, L.L.C. | 89 |
25 |
| Qinterra Technologies AS | 38 |
18 |
| Smith International, Inc. | 717 |
14 |
| Other owners | 1032 |