- 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 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: 757
10-year publication summary
|
51
|
50
|
62
|
88
|
101
|
89
|
60
|
75
|
68
|
21
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20165 |
87 |
| Saudi Arabian Oil Company | 11322 |
86 |
| Schlumberger Technology Corporation | 9690 |
22 |
| Aramco Services Company | 3504 |
22 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
22 |
| Baker Hughes Incorporated | 5689 |
18 |
| WellWorx Energy Solutions LLC | 23 |
18 |
| Schlumberger Canada Limited | 6913 |
17 |
| Forum US, Inc. | 315 |
16 |
| Baker Hughes Holdings LLC | 3060 |
16 |
| Chevron U.S.A. Inc. | 3774 |
15 |
| Blackjack Production Tools, LLC | 14 |
14 |
| Heal Systems LP | 28 |
13 |
| ExxonMobil Upstream Research Company | 2525 |
11 |
| Modicum, LLC | 13 |
11 |
| Oilify New-tech Solutions Inc. | 16 |
11 |
| Schlumberger Technology B.v. | 4951 |
9 |
| Services Petroliers Schlumberger | 5426 |
9 |
| Baker Hughes, a GE Company, LLC | 2171 |
9 |
| PetroChina Company Limited | 462 |
8 |
| Other owners | 323 |