- 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 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: 1361
10-year publication summary
|
149
|
144
|
137
|
152
|
120
|
116
|
115
|
107
|
101
|
21
|
| 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 |
228 |
| Schlumberger Technology Corporation | 9690 |
80 |
| Weatherford Technology Holdings, LLC | 2135 |
79 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
65 |
| Baker Hughes Incorporated | 5689 |
59 |
| Baker Hughes, a GE Company, LLC | 2171 |
44 |
| Saudi Arabian Oil Company | 11322 |
43 |
| Baker Hughes Holdings LLC | 3060 |
40 |
| Schlumberger Canada Limited | 6913 |
38 |
| The Wellboss Company, LLC | 96 |
38 |
| Cameron International Corporation | 1305 |
34 |
| Schlumberger Technology B.v. | 4951 |
31 |
| Services Petroliers Schlumberger | 5426 |
31 |
| Welltec AS | 301 |
19 |
| Innovex Downhole Solutions, Inc. | 182 |
15 |
| Interwell Norway AS | 48 |
14 |
| Ardyne Holdings Limited | 86 |
13 |
| Dril-Quip, Inc. | 155 |
12 |
| NCS Multistage Inc. | 172 |
12 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
10 |
| Other owners | 456 |