- 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 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
Patent holdings for IPC class E21B 23/04
Total number of patents in this class: 1294
10-year publication summary
|
79
|
81
|
79
|
103
|
92
|
121
|
128
|
170
|
110
|
30
|
| 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 |
197 |
| Schlumberger Technology Corporation | 9690 |
78 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
75 |
| Weatherford Technology Holdings, LLC | 2135 |
67 |
| Baker Hughes Incorporated | 5689 |
56 |
| Schlumberger Canada Limited | 6913 |
38 |
| Schlumberger Technology B.v. | 4951 |
36 |
| Services Petroliers Schlumberger | 5426 |
36 |
| Baker Hughes Holdings LLC | 3060 |
36 |
| Baker Hughes, a GE Company, LLC | 2171 |
32 |
| Saudi Arabian Oil Company | 11322 |
27 |
| Ardyne Holdings Limited | 86 |
25 |
| Thru Tubing Solutions, Inc. | 361 |
22 |
| Welltec AS | 301 |
18 |
| Cameron International Corporation | 1305 |
17 |
| DYNAenergetics Europe GmbH | 205 |
17 |
| Robertson Intellectual Properties, LLC | 88 |
16 |
| Innovex Downhole Solutions, Inc. | 182 |
16 |
| Hunting Titan, Inc. | 240 |
14 |
| Weatherford U.K. Limited | 73 |
13 |
| Other owners | 458 |