- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F02B - Internal-combustion piston enginescombustion engines in general
- F02B 55/02 - Pistons
Patent holdings for IPC class F02B 55/02
Total number of patents in this class: 103
10-year publication summary
|
13
|
19
|
9
|
24
|
18
|
22
|
11
|
12
|
13
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 5517 |
20 |
| Lumenium Power LLC | 9 |
7 |
| LG Electronics Inc. | 75855 |
6 |
| The United States of America as represented by the Secretary of the Navy | 2866 |
5 |
| Jiangsu University | 1174 |
5 |
| WB Development Company, LLC | 19 |
5 |
| Eagle Industry Co., Ltd. | 1180 |
3 |
| LiquidPiston, Inc. | 49 |
3 |
| Pratt & Whitney Rocketdyne, Inc. | 37 |
3 |
| Duplicent, LLC | 59 |
3 |
| Huazhong University of Science and Technology | 1135 |
2 |
| Okamura Yugen Kaisha | 23 |
2 |
| Circle Engine Co | 2 |
2 |
| Astron Aerospace LLC | 16 |
2 |
| Rotary Research Group LLC | 2 |
2 |
| Shaanxi Xin Nian Power Technology Group Co., Ltd. | 2 |
2 |
| Wisconsin Alumni Research Foundation | 3900 |
1 |
| Mazda Motor Corporation | 3304 |
1 |
| Beihang University | 561 |
1 |
| Ceramic Rotary Engines, Inc. | 1 |
1 |
| Other owners | 27 |