- 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 19/12 - Rope clamps
Patent holdings for IPC class E21B 19/12
Total number of patents in this class: 55
10-year publication summary
|
3
|
4
|
7
|
3
|
3
|
2
|
2
|
2
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schlumberger Technology Corporation | 11298 |
6 |
| Baker Hughes Incorporated | 5098 |
5 |
| Halliburton Energy Services, Inc. | 21115 |
3 |
| National Oilwell Varco, L.P. | 1702 |
3 |
| Britannia Engineering (Isle of Man) Limited | 8 |
3 |
| Board of Regents of the Nevada System of Higher Education, on behalf of the Desert Research Institute | 30 |
2 |
| Forum US, Inc. | 343 |
2 |
| Mhwirth AS | 130 |
2 |
| Saudi Arabian Oil Company | 13865 |
2 |
| Weatherford Technology Holdings, LLC | 2034 |
1 |
| Aborra AG | 7 |
1 |
| Aker Solutions AS | 176 |
1 |
| Aramco Services Company | 4156 |
1 |
| Cameron International Corporation | 1355 |
1 |
| Claxton Engineering Services Limited | 12 |
1 |
| Consolidated Rig Works L.P. | 10 |
1 |
| Ensco International Incorporated | 56 |
1 |
| FMC Kongsberg Subsea AS | 190 |
1 |
| Frank's International, Inc. | 62 |
1 |
| Nabors Industries, Inc. | 37 |
1 |
| Other owners | 16 |