- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F02B - Internal-combustion piston enginescombustion engines in general
- F02B 55/08 - Outer members for co-operation with rotary pistonsCasings
Patent holdings for IPC class F02B 55/08
Total number of patents in this class: 122
10-year publication summary
|
12
|
11
|
15
|
13
|
10
|
22
|
18
|
13
|
18
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 4793 |
46 |
| LG Electronics Inc. | 73344 |
10 |
| Lumenium LLC | 16 |
6 |
| Astron Aerospace LLC | 14 |
6 |
| The United States of America as represented by the Secretary of the Navy | 2753 |
4 |
| Jiangsu University | 1103 |
4 |
| Pratt & Whitney Rocketdyne, Inc. | 37 |
4 |
| Duplicent, LLC | 47 |
3 |
| Beihang University | 511 |
2 |
| Huazhong University of Science and Technology | 1055 |
2 |
| REGI U.S., Inc. | 6 |
2 |
| WB Development Company, LLC | 20 |
2 |
| Rotary Research Group LLC | 2 |
2 |
| Shaanxi Xin Nian Power Technology Group Co., Ltd. | 2 |
2 |
| Wisconsin Alumni Research Foundation | 3894 |
1 |
| Mazda Motor Corporation | 3151 |
1 |
| Ceramic Rotary Engines, Inc. | 1 |
1 |
| GoTek Energy, Inc. | 10 |
1 |
| International Composting Corporation | 1 |
1 |
| Istanbul Teknik Universitesi | 170 |
1 |
| Other owners | 21 |