- 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 43/118 - Gun or shaped-charge perforators characterised by lowering in vertical position and subsequent tilting to operating position
Patent holdings for IPC class E21B 43/118
Total number of patents in this class: 34
10-year publication summary
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4
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2
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5
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4
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1
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3
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4
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3
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3
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3
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schlumberger Technology Corporation | 10717 |
7 |
| Halliburton Energy Services, Inc. | 20891 |
4 |
| Geodynamics, Inc. | 192 |
4 |
| Hunting Titan, Inc. | 246 |
4 |
| SWM International, LLC | 12 |
3 |
| Wells Fargo Bank, National Association | 3825 |
2 |
| DYNAenergetics Europe GmbH | 247 |
2 |
| Defiant Engineering, LLC | 26 |
2 |
| Baker Hughes Incorporated | 5247 |
1 |
| G & H Diversified Manufacturing, LP, Edward Cannoy Kash, U.S. Citizen; Merry Janan Kash, U.S. Citizen | 69 |
1 |
| The Gasgun, Inc. | 1 |
1 |
| The Gasgun LLC | 8 |
1 |
| GR Energy Services Management, LP | 43 |
1 |
| XConnect, LLC | 54 |
1 |
| Other owners | 0 |