- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01L - Cyclically operating valves for machines or engines
- F01L 25/04 - Drive, or adjustment during operation, of distribution or expansion valves by non-mechanical means by fluid means by working fluid of machine or engine, e.g. free-piston machine
Patent holdings for IPC class F01L 25/04
Total number of patents in this class: 3
10-year publication summary
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0
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1
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1
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0
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0
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0
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1
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0
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0
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Caterpillar Inc. | 9539 |
1 |
| GE Aviation Systems LLC | 583 |
1 |
| Thermal Power Recovery LLC | 12 |
1 |
| Other owners | 0 |