- 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: 298
10-year publication summary
|
33
|
24
|
37
|
29
|
38
|
24
|
20
|
16
|
26
|
21
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 4716 |
102 |
| LiquidPiston, Inc. | 49 |
11 |
| Rotoliptic Technologies Incorporated | 20 |
7 |
| Jiangsu University | 1094 |
6 |
| Lontra Limited | 27 |
6 |
| The United States of America as represented by the Secretary of the Navy | 2747 |
5 |
| LG Electronics Inc. | 72807 |
4 |
| Mazda Motor Corporation | 3128 |
4 |
| GoTek Energy, Inc. | 10 |
4 |
| Okamura Yugen Kaisha | 22 |
4 |
| Tocircle Industries AS | 12 |
4 |
| Kabushiki Kaisha Toyota Jidoshokki | 1750 |
4 |
| AVL List GmbH | 1290 |
3 |
| Eagle Industry Co., Ltd. | 1125 |
3 |
| Lumenium LLC | 16 |
3 |
| Planetary Rotor Engine Company | 4 |
3 |
| Pratt & Whitney Rocketdyne, Inc. | 37 |
3 |
| Duplicent, LLC | 46 |
3 |
| Ford Global Technologies, LLC | 20520 |
2 |
| Compound Rotary Engines Limited | 5 |
2 |
| Other owners | 115 |