- 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 29/04 - Cutting of wire lines or the like
Patent holdings for IPC class E21B 29/04
Total number of patents in this class: 122
10-year publication summary
|
13
|
7
|
3
|
6
|
3
|
13
|
5
|
10
|
5
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20924 |
9 |
| Baker Hughes Incorporated | 5265 |
7 |
| Athabasca Oil Corporation | 21 |
7 |
| Interventek Subsea Engineering Limited | 18 |
7 |
| Schlumberger Technology Corporation | 10802 |
5 |
| Cameron International Corporation | 1336 |
5 |
| Impact Selector International, LLC | 113 |
5 |
| Aker Solutions AS | 242 |
4 |
| Expro North Sea Limited | 231 |
4 |
| Baker Hughes Oilfield Operations, LLC | 2304 |
4 |
| TimeSaver Downhole Products, LLC | 4 |
4 |
| G & H Diversified Manufacturing, LP, Edward Cannoy Kash, U.S. Citizen; Merry Janan Kash, U.S. Citizen | 70 |
3 |
| Saudi Arabian Oil Company | 13263 |
3 |
| Absolute Oilfield Equipment, LLC | 4 |
2 |
| ConocoPhillips Company | 1676 |
2 |
| Hydra Systems AS | 37 |
2 |
| Hydril USA Distribution LLC | 212 |
2 |
| OneSubsea IP UK Limited | 421 |
2 |
| Robertson Intellectual Properties, LLC | 92 |
2 |
| Smart Installations AS | 8 |
2 |
| Other owners | 41 |