- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01L - Cyclically operating valves for machines or engines
- F01L 13/04 - Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for starting by means of fluid pressure
Patent holdings for IPC class F01L 13/04
Total number of patents in this class: 10
10-year publication summary
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0
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1
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2
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0
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2
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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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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wartsila Finland Oy | 740 |
2 |
| GM Global Technology Operations LLC | 13620 |
1 |
| BorgWarner Inc. | 2604 |
1 |
| Chery Automobile Co., Ltd. | 274 |
1 |
| Jacobs Vehicle Systems, Inc. | 212 |
1 |
| University of Kwazulu-natal | 42 |
1 |
| Wuhu Power-technology Research Co., Ltd | 89 |
1 |
| Acodeq Vastgoed B.V. | 1 |
1 |
| Rolls-Royce Solutions GmbH | 228 |
1 |
| Other owners | 0 |