- 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 43/1185 - Ignition systems
Patent holdings for IPC class E21B 43/1185
Total number of patents in this class: 822
10-year publication summary
|
35
|
39
|
46
|
82
|
60
|
86
|
77
|
47
|
67
|
49
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20964 |
133 |
| DYNAenergetics Europe GmbH | 252 |
91 |
| Hunting Titan, Inc. | 247 |
82 |
| Schlumberger Technology Corporation | 10898 |
57 |
| Geodynamics, Inc. | 195 |
47 |
| Schlumberger Canada Limited | 7369 |
36 |
| Owen Oil Tools LP | 90 |
29 |
| Wells Fargo Bank, National Association | 3962 |
28 |
| G & H Diversified Manufacturing, LP, Edward Cannoy Kash, U.S. Citizen; Merry Janan Kash, U.S. Citizen | 70 |
27 |
| Services Petroliers Schlumberger | 5830 |
23 |
| Schlumberger Technology B.v. | 5184 |
22 |
| XConnect, LLC | 54 |
17 |
| Baker Hughes Incorporated | 5246 |
14 |
| Harrison Jet Guns II, L.P., Harrison Jet Guns Management Company, L.L.C., a Texas Limited Liability Company | 25 |
14 |
| DYNAenergetics GmbH & Co. KG | 39 |
11 |
| Expro Americas, LLC | 52 |
9 |
| GR Energy Services Management, LP | 41 |
9 |
| SWM International, LLC | 13 |
9 |
| Baker Hughes Holdings LLC | 2999 |
8 |
| Weatherford Technology Holdings, LLC | 2028 |
6 |
| Other owners | 150 |