- 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 29/12 - Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning 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: 273
10-year publication summary
|
15
|
20
|
21
|
13
|
6
|
9
|
7
|
4
|
2
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Oceaneering International, Inc. | 413 |
14 |
| Vetco Gray, LLC | 161 |
13 |
| Aes-eot Equipment Holdings, LLC | 31 |
13 |
| Schlumberger Technology Corporation | 9690 |
12 |
| Halliburton Energy Services, Inc. | 20165 |
8 |
| Hydril USA Distribution LLC | 206 |
8 |
| FMC Technologies, Inc. | 603 |
7 |
| Weatherford Technology Holdings, LLC | 2135 |
6 |
| Dril-Quip, Inc. | 155 |
6 |
| Baker Hughes Incorporated | 5689 |
5 |
| ExxonMobil Upstream Research Company | 2525 |
5 |
| Foro Energy, Inc. | 104 |
5 |
| Kellogg Brown & Root LLC | 489 |
5 |
| Mako Rentals, Inc. | 61 |
5 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
4 |
| Shell Oil Company | 2196 |
4 |
| OneSubsea IP UK Limited | 378 |
4 |
| Petroleo Brasileiro S.A. - Petrobras | 730 |
4 |
| Schlumberger Canada Limited | 6913 |
3 |
| Schlumberger Technology B.v. | 4951 |
3 |
| Other owners | 139 |