- 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 17/06 - Releasing-joints, e.g. safety joints
Patent holdings for IPC class E21B 17/06
Total number of patents in this class: 394
10-year publication summary
|
26
|
27
|
28
|
21
|
26
|
18
|
28
|
19
|
17
|
15
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21006 |
90 |
| Saudi Arabian Oil Company | 13569 |
22 |
| Schlumberger Technology Corporation | 10994 |
18 |
| Impact Selector International, LLC | 112 |
15 |
| Baker Hughes Oilfield Operations, LLC | 2376 |
11 |
| Weatherford Technology Holdings, LLC | 2029 |
9 |
| Thru Tubing Solutions, Inc. | 381 |
7 |
| Baker Hughes Incorporated | 5190 |
6 |
| Enventure Global Technology, L.L.C. | 84 |
6 |
| Aramco Services Company | 4077 |
6 |
| Hunting Titan, Inc. | 246 |
6 |
| Intelligent Drilling Tools Limited | 9 |
5 |
| Vertice Oil Tools Inc. | 94 |
5 |
| Aker Subsea AS | 128 |
4 |
| G & H Diversified Manufacturing, LP, Edward Cannoy Kash, U.S. Citizen; Merry Janan Kash, U.S. Citizen | 71 |
4 |
| National Oilwell Varco, L.P. | 1695 |
4 |
| Statoil Petroleum AS | 511 |
4 |
| Tercel IP Limited | 37 |
4 |
| Welltec AS | 300 |
4 |
| Baker Hughes Holdings LLC | 3006 |
4 |
| Other owners | 160 |