- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01C - Rotary-piston or oscillating-piston machines or engines
- F01C 9/00 - Oscillating-piston machines or engines
Patent holdings for IPC class F01C 9/00
Total number of patents in this class: 94
10-year publication summary
|
12
|
9
|
10
|
9
|
4
|
1
|
2
|
4
|
6
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FeTu Limited | 16 |
10 |
| Woodward, Inc. | 671 |
7 |
| Clearmotion, Inc. | 184 |
6 |
| LiquidPiston, Inc. | 51 |
5 |
| Fresenius Kabi Deutschland GmbH | 605 |
4 |
| Nabtesco Corporation | 854 |
4 |
| ixetic Bad Homburg GmbH | 44 |
2 |
| Log Max AB | 31 |
2 |
| Otechos AS | 9 |
2 |
| University of Sussex | 95 |
2 |
| WB Development Company, LLC | 19 |
2 |
| RapSon GmbH | 3 |
2 |
| Quest Engines, LLC | 31 |
2 |
| Hybridise Limited | 2 |
2 |
| Be-simplex B.V. | 4 |
2 |
| FNF Innovation Sh.p.k. | 13 |
2 |
| General Electric Company | 13808 |
1 |
| The Boeing Company | 20094 |
1 |
| CapTech S.r.l. | 1 |
1 |
| Donald E. Moriarty | 5 |
1 |
| Other owners | 34 |