- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- 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: 13
10-year publication summary
|
2
|
4
|
0
|
3
|
0
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0
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0
|
0
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0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Waseda University | 459 |
2 |
| General Electric Company | 13863 |
1 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 44282 |
1 |
| Cox Powertrain Ltd | 44 |
1 |
| Husqvarna AB | 2936 |
1 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3997 |
1 |
| Libertine FPE Ltd. | 31 |
1 |
| Liftwave, Inc., DBA Rise Robotics | 39 |
1 |
| Thermal Power Recovery LLC | 12 |
1 |
| Universiteit Gent | 1355 |
1 |
| Aquarius Engines (A.M.) Ltd. | 37 |
1 |
| Nautilus Engineering, LLC | 7 |
1 |
| Other owners | 0 |