- 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 23/04 - 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: 1484
10-year publication summary
|
79
|
103
|
92
|
122
|
130
|
172
|
134
|
127
|
85
|
17
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21217 |
250 |
| Baker Hughes Oilfield Operations, LLC | 2441 |
100 |
| Schlumberger Technology Corporation | 11485 |
91 |
| Weatherford Technology Holdings, LLC | 2068 |
81 |
| Baker Hughes Incorporated | 5041 |
50 |
| Schlumberger Canada Limited | 7558 |
42 |
| Schlumberger Technology B.v. | 5267 |
37 |
| Services Petroliers Schlumberger | 5977 |
37 |
| Saudi Arabian Oil Company | 13953 |
36 |
| Baker Hughes Holdings LLC | 2992 |
35 |
| Baker Hughes, a GE Company, LLC | 2094 |
32 |
| DYNAenergetics Europe GmbH | 258 |
24 |
| Thru Tubing Solutions, Inc. | 393 |
23 |
| Welltec AS | 309 |
20 |
| Cameron International Corporation | 1368 |
19 |
| Robertson Intellectual Properties, LLC | 94 |
17 |
| Ardyne Holdings Limited | 61 |
17 |
| Hunting Titan, Inc. | 234 |
15 |
| Weatherford U.K. Limited | 71 |
13 |
| WWT North America Holdings, Inc. | 55 |
12 |
| Other owners | 533 |