- 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 17/05 - Swivel joints
Patent holdings for IPC class E21B 17/05
Total number of patents in this class: 285
10-year publication summary
|
23
|
24
|
26
|
13
|
15
|
22
|
19
|
19
|
12
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21161 |
25 |
| Mako Rentals, Inc. | 47 |
23 |
| Saudi Arabian Oil Company | 13940 |
14 |
| Schlumberger Technology Corporation | 11449 |
13 |
| Cameron International Corporation | 1365 |
8 |
| National Oilwell Varco, L.P. | 1701 |
7 |
| Weatherford Technology Holdings, LLC | 2033 |
6 |
| Aramco Services Company | 4172 |
5 |
| Tercel IP Limited | 37 |
5 |
| Baker Hughes Incorporated | 5057 |
4 |
| Premium Artificial Lift Systems Ltd. | 17 |
4 |
| Baker Hughes Oilfield Operations, LLC | 2430 |
4 |
| Schlumberger Canada Limited | 7544 |
3 |
| Schlumberger Technology B.v. | 5270 |
3 |
| Schlumberger Holdings Limited | 2743 |
3 |
| ConocoPhillips Company | 1703 |
3 |
| Ene29 S.ar.l. | 32 |
3 |
| ExxonMobil Upstream Research Company | 2340 |
3 |
| FMC Technologies, Inc. | 603 |
3 |
| Forum US, Inc. | 345 |
3 |
| Other owners | 143 |