- 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 43/34 - Arrangements for separating materials produced by the well
Patent holdings for IPC class E21B 43/34
Total number of patents in this class: 1268
10-year publication summary
|
113
|
101
|
113
|
117
|
94
|
87
|
107
|
101
|
83
|
65
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 14329 |
99 |
| Halliburton Energy Services, Inc. | 21296 |
71 |
| Chevron U.S.A. Inc. | 4162 |
26 |
| Schlumberger Technology Corporation | 11893 |
24 |
| ConocoPhillips Company | 1716 |
19 |
| Enercorp Engineered Solutions Inc. | 54 |
18 |
| Baker Hughes Incorporated | 4903 |
15 |
| FMC Technologies, Inc. | 617 |
15 |
| Aramco Services Company | 4192 |
14 |
| M-I L.L.C. | 737 |
14 |
| Equinor Energy AS | 498 |
14 |
| Schlumberger Canada Limited | 7627 |
13 |
| Schlumberger Technology B.v. | 5302 |
13 |
| Seabed Separation AS | 14 |
13 |
| CNX Resources Corporation | 59 |
13 |
| ExxonMobil Upstream Research Company | 2291 |
12 |
| Services Petroliers Schlumberger | 6038 |
12 |
| Statoil Petroleum AS | 468 |
11 |
| Fourphase AS | 13 |
11 |
| Cenovus Energy Inc. | 425 |
9 |
| Other owners | 832 |