- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01L - Cyclically operating valves for machines or engines
- F01L 15/12 - Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups characterised by having means for effecting pressure equilibrium between two different cylinder spaces at idling
Patent holdings for IPC class F01L 15/12
Total number of patents in this class: 6
10-year publication summary
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0
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0
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0
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0
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0
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1
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1
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1
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1
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0
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rolls-Royce PLC | 2944 |
4 |
| Dosatron International | 68 |
1 |
| Promera GmbH & Co. KG | 5 |
1 |
| Other owners | 0 |