- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01C - Rotary-piston or oscillating-piston machines or engines
- F01C 1/22 - Rotary-piston machines or engines of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member
Patent holdings for IPC class F01C 1/22
Total number of patents in this class: 277
10-year publication summary
|
27
|
37
|
15
|
25
|
13
|
13
|
14
|
17
|
10
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 5479 |
154 |
| LiquidPiston, Inc. | 50 |
11 |
| AVL List GmbH | 1324 |
10 |
| Rotoliptic Technologies Incorporated | 21 |
9 |
| Uav Engines Ltd | 10 |
6 |
| Lumenium Power LLC | 9 |
6 |
| LG Electronics Inc. | 75694 |
5 |
| The United States of America as represented by the Secretary of the Navy | 2858 |
5 |
| Compound Rotary Engines Limited | 7 |
5 |
| New Scientific R&D Institute Inc. | 5 |
5 |
| IP Consortium Limited | 7 |
3 |
| Wankel Supertec GmbH | 5 |
3 |
| Steammotor Finland Oy AB Ltd | 3 |
3 |
| Atlas Copco Airpower, naamloze vennootschap | 1081 |
2 |
| Huazhong University of Science and Technology | 1126 |
2 |
| Jiangsu University | 1166 |
2 |
| Lonati S.p.A. | 86 |
2 |
| Mynzye Limited | 2 |
2 |
| Halliburton Energy Services, Inc. | 21338 |
1 |
| Siemens AG | 24029 |
1 |
| Other owners | 40 |