- 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 23/01 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
Patent holdings for IPC class E21B 23/01
Total number of patents in this class: 1507
10-year publication summary
|
127
|
125
|
141
|
105
|
101
|
99
|
88
|
93
|
87
|
66
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20911 |
292 |
| Schlumberger Technology Corporation | 10780 |
87 |
| Baker Hughes Oilfield Operations, LLC | 2302 |
86 |
| Weatherford Technology Holdings, LLC | 2023 |
73 |
| Baker Hughes Incorporated | 5274 |
56 |
| Saudi Arabian Oil Company | 13224 |
46 |
| Baker Hughes, a GE Company, LLC | 2110 |
44 |
| Baker Hughes Holdings LLC | 3007 |
39 |
| The Wellboss Company, LLC | 103 |
38 |
| Schlumberger Canada Limited | 7332 |
36 |
| Cameron International Corporation | 1335 |
34 |
| Schlumberger Technology B.v. | 5176 |
32 |
| Services Petroliers Schlumberger | 5803 |
32 |
| Welltec AS | 298 |
20 |
| Interwell Norway AS | 62 |
16 |
| Ardyne Holdings Limited | 88 |
14 |
| Innovex Downhole Solutions, LLC | 146 |
14 |
| NCS Multistage Inc. | 177 |
11 |
| Shell Internationale Research Maatschappij B.V. | 3548 |
10 |
| Robertson Intellectual Properties, LLC | 92 |
10 |
| Other owners | 517 |