- 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 43/38 - Arrangements for separating materials produced by the well in the well
Patent holdings for IPC class E21B 43/38
Total number of patents in this class: 787
10-year publication summary
|
50
|
62
|
88
|
101
|
90
|
60
|
75
|
72
|
56
|
38
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20788 |
107 |
| Saudi Arabian Oil Company | 12911 |
87 |
| Baker Hughes Oilfield Operations, LLC | 2283 |
27 |
| Aramco Services Company | 3927 |
22 |
| Schlumberger Technology Corporation | 10652 |
21 |
| Chevron U.S.A. Inc. | 3939 |
17 |
| Baker Hughes Incorporated | 5279 |
16 |
| Baker Hughes Holdings LLC | 3006 |
16 |
| Forum US, Inc. | 336 |
15 |
| Blackjack Production Tools, LLC | 14 |
14 |
| Oilify New-tech Solutions Inc. | 23 |
14 |
| Schlumberger Canada Limited | 7266 |
11 |
| ExxonMobil Upstream Research Company | 2408 |
11 |
| Modicum, LLC | 13 |
11 |
| Liberty Lift Solutions LLC | 39 |
11 |
| Heal Systems LP | 23 |
10 |
| Schlumberger Technology B.v. | 5160 |
9 |
| Services Petroliers Schlumberger | 5771 |
9 |
| Baker Hughes, a GE Company, LLC | 2114 |
9 |
| PetroChina Company Limited | 692 |
8 |
| Other owners | 342 |