- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01L - Cyclically operating valves for machines or engines
- F01L 21/02 - Piston or piston-rod used as valve member
Patent holdings for IPC class F01L 21/02
Total number of patents in this class: 12
10-year publication summary
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0
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2
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4
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0
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3
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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
|
|---|---|---|
| Waseda University | 416 |
2 |
| General Electric Company | 18133 |
1 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
1 |
| Cox Powertrain Ltd | 54 |
1 |
| Husqvarna AB | 2824 |
1 |
| Libertine FPE Ltd. | 29 |
1 |
| Liftwave, Inc., DBA Rise Robotics | 26 |
1 |
| Thermal Power Recovery LLC | 12 |
1 |
| Universiteit Gent | 1276 |
1 |
| Aquarius Engines (A.M.) Ltd. | 35 |
1 |
| Nautilus Engineering, LLC | 9 |
1 |
| Other owners | 0 |