- 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 43/119 - Details, e.g. for locating perforating place or direction
Patent holdings for IPC class E21B 43/119
Total number of patents in this class: 891
10-year publication summary
|
35
|
39
|
67
|
65
|
74
|
81
|
61
|
77
|
53
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21098 |
196 |
| DYNAenergetics Europe GmbH | 258 |
69 |
| Schlumberger Technology Corporation | 11274 |
64 |
| Hunting Titan, Inc. | 242 |
53 |
| Saudi Arabian Oil Company | 13857 |
35 |
| Schlumberger Canada Limited | 7487 |
34 |
| Schlumberger Technology B.v. | 5245 |
26 |
| Services Petroliers Schlumberger | 5923 |
26 |
| Geodynamics, Inc. | 195 |
22 |
| Wells Fargo Bank, National Association | 4220 |
22 |
| ExxonMobil Upstream Research Company | 2358 |
21 |
| G & H Diversified Manufacturing, LP, Edward Cannoy Kash, U.S. Citizen; Merry Janan Kash, U.S. Citizen | 76 |
18 |
| Dorf Ketal Chemicals FZE | 200 |
18 |
| Baker Hughes Incorporated | 5109 |
12 |
| XConnect, LLC | 55 |
12 |
| Schlumberger Holdings Limited | 2754 |
11 |
| Owen Oil Tools LP | 82 |
11 |
| Prad Research and Development Limited | 2684 |
11 |
| GR Energy Services Management, LP | 41 |
9 |
| Baker Hughes Holdings LLC | 2986 |
9 |
| Other owners | 212 |