- 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 29/12 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground specially adapted for underwater installations
Patent holdings for IPC class E21B 29/12
Total number of patents in this class: 242
10-year publication summary
|
20
|
21
|
13
|
6
|
9
|
7
|
4
|
2
|
6
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schlumberger Technology Corporation | 10717 |
12 |
| Aes-eot Equipment Holdings, LLC | 30 |
12 |
| Oceaneering International, Inc. | 424 |
11 |
| Vetco Gray, LLC | 152 |
11 |
| Hydril USA Distribution LLC | 213 |
8 |
| Halliburton Energy Services, Inc. | 20891 |
7 |
| Weatherford Technology Holdings, LLC | 2023 |
6 |
| Baker Hughes Incorporated | 5247 |
5 |
| Foro Energy, Inc. | 106 |
5 |
| OneSubsea IP UK Limited | 419 |
5 |
| ConocoPhillips Company | 1673 |
4 |
| ExxonMobil Upstream Research Company | 2397 |
4 |
| FMC Technologies, Inc. | 604 |
4 |
| Mako Rentals, Inc. | 60 |
4 |
| Schlumberger Canada Limited | 7296 |
3 |
| Schlumberger Technology B.v. | 5168 |
3 |
| Schlumberger Holdings Limited | 2828 |
3 |
| Shell Internationale Research Maatschappij B.V. | 3540 |
3 |
| Shell Oil Company | 2140 |
3 |
| Bastion Technologies, Inc. | 27 |
3 |
| Other owners | 126 |