- 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 17/05 - Swivel joints
Patent holdings for IPC class E21B 17/05
Total number of patents in this class: 281
10-year publication summary
|
43
|
29
|
27
|
26
|
15
|
18
|
25
|
20
|
19
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mako Rentals, Inc. | 59 |
31 |
| Halliburton Energy Services, Inc. | 20403 |
26 |
| Saudi Arabian Oil Company | 12390 |
17 |
| Schlumberger Technology Corporation | 10217 |
13 |
| Cameron International Corporation | 1322 |
8 |
| Weatherford Technology Holdings, LLC | 2107 |
6 |
| National Oilwell Varco, L.P. | 1624 |
6 |
| Tercel IP Limited | 42 |
6 |
| Aramco Services Company | 3735 |
5 |
| Baker Hughes Incorporated | 5514 |
4 |
| Premium Artificial Lift Systems Ltd. | 17 |
4 |
| Boart Longyear Company | 269 |
4 |
| Schlumberger Canada Limited | 7137 |
3 |
| Schlumberger Technology B.v. | 5058 |
3 |
| Schlumberger Holdings Limited | 2870 |
3 |
| ConocoPhillips Company | 1676 |
3 |
| Ene29 S.ar.l. | 32 |
3 |
| ExxonMobil Upstream Research Company | 2456 |
3 |
| FMC Technologies, Inc. | 584 |
3 |
| Forum US, Inc. | 329 |
3 |
| Other owners | 127 |