- 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 17/046 - CouplingsJoints between rod and bit, or between rod and rod with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
Patent holdings for IPC class E21B 17/046
Total number of patents in this class: 569
10-year publication summary
|
40
|
51
|
63
|
66
|
46
|
44
|
46
|
41
|
27
|
19
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20901 |
75 |
| Weatherford Technology Holdings, LLC | 2023 |
41 |
| Baker Hughes Incorporated | 5241 |
19 |
| The Charles Machine Works, Inc. | 405 |
16 |
| Schlumberger Technology Corporation | 10727 |
14 |
| Vermeer Manufacturing Company | 635 |
14 |
| Tracto-Technik GmbH & Co. KG | 170 |
13 |
| Pier Tech Systems, LLC | 29 |
12 |
| Saudi Arabian Oil Company | 13185 |
10 |
| Thru Tubing Solutions, Inc. | 379 |
9 |
| Optionx Holdings Pty Ltd | 11 |
9 |
| Schlumberger Canada Limited | 7296 |
8 |
| National Oilwell Varco, L.P. | 1669 |
8 |
| Baker Hughes Oilfield Operations, LLC | 2305 |
8 |
| Hilti Aktiengesellschaft | 3495 |
7 |
| Cameron International Corporation | 1332 |
7 |
| IFP Energies Nouvelles | 2933 |
7 |
| TT Technologies, Inc. | 151 |
7 |
| Fhe USA LLC | 41 |
7 |
| Vertice Oil Tools Inc. | 94 |
7 |
| Other owners | 271 |