- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F02B - Internal-combustion piston enginescombustion engines in general
- F02B 53/00 - Internal-combustion aspects of rotary-piston or oscillating-piston engines
Patent holdings for IPC class F02B 53/00
Total number of patents in this class: 300
10-year publication summary
|
24
|
37
|
29
|
38
|
24
|
20
|
16
|
27
|
27
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 5511 |
108 |
| LiquidPiston, Inc. | 49 |
11 |
| Rotoliptic Technologies Incorporated | 21 |
7 |
| The United States of America as represented by the Secretary of the Navy | 2859 |
6 |
| Jiangsu University | 1171 |
6 |
| Lontra Limited | 24 |
6 |
| LG Electronics Inc. | 75845 |
4 |
| Mazda Motor Corporation | 3304 |
4 |
| Tocircle Industries AS | 13 |
4 |
| Kabushiki Kaisha Toyota Jidoshokki | 1815 |
4 |
| Duplicent, LLC | 59 |
4 |
| AVL List GmbH | 1325 |
3 |
| Eagle Industry Co., Ltd. | 1176 |
3 |
| GoTek Energy, Inc. | 9 |
3 |
| Okamura Yugen Kaisha | 23 |
3 |
| Planetary Rotor Engine Company | 4 |
3 |
| Pratt & Whitney Rocketdyne, Inc. | 37 |
3 |
| Ford Global Technologies, LLC | 21532 |
2 |
| Compound Rotary Engines Limited | 7 |
2 |
| Global Energy Research Associates, LLC | 7 |
2 |
| Other owners | 112 |