- 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: 818
10-year publication summary
|
53
|
79
|
85
|
77
|
56
|
66
|
59
|
55
|
56
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21115 |
109 |
| Saudi Arabian Oil Company | 13865 |
93 |
| Baker Hughes Oilfield Operations, LLC | 2414 |
29 |
| Aramco Services Company | 4156 |
24 |
| Schlumberger Technology Corporation | 11298 |
23 |
| Chevron U.S.A. Inc. | 4050 |
17 |
| Baker Hughes Incorporated | 5098 |
15 |
| Forum US, Inc. | 343 |
15 |
| Blackjack Production Tools, LLC | 15 |
15 |
| Baker Hughes Holdings LLC | 2985 |
15 |
| Oilify New-tech Solutions Inc. | 23 |
14 |
| Schlumberger Canada Limited | 7497 |
13 |
| Modicum, LLC | 14 |
12 |
| Liberty Lift Solutions LLC | 47 |
12 |
| Schlumberger Technology B.v. | 5251 |
11 |
| ExxonMobil Upstream Research Company | 2356 |
11 |
| Services Petroliers Schlumberger | 5931 |
11 |
| Heal Systems LP | 23 |
10 |
| Baker Hughes, a GE Company, LLC | 2105 |
9 |
| National Oilwell Varco, L.P. | 1702 |
8 |
| Other owners | 352 |