- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F02B - Internal-combustion piston engines; combustion engines in general
- F02B 55/14 - Shapes or constructions of combustion chambers
Patent holdings for IPC class F02B 55/14
Total number of patents in this class: 94
10-year publication summary
|
16
|
14
|
14
|
7
|
21
|
14
|
20
|
12
|
10
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 4442 |
24 |
| Astron Aerospace LLC | 13 |
5 |
| The United States of America as represented by the Secretary of the Navy | 2720 |
4 |
| Jiangsu University | 1048 |
4 |
| LiquidPiston, Inc. | 44 |
4 |
| Lumenium LLC | 15 |
4 |
| Pratt & Whitney Rocketdyne, Inc. | 37 |
4 |
| LG Electronics Inc. | 71039 |
3 |
| 1159718 B.C. Ltd. | 3 |
3 |
| Huazhong University of Science and Technology | 993 |
2 |
| Okamura Yugen Kaisha | 23 |
2 |
| Scott Hudson | 2 |
2 |
| Circle Engine Co | 2 |
2 |
| Duplicent, LLC | 43 |
2 |
| Shaanxi Xin Nian Power Technology Group Co., Ltd. | 2 |
2 |
| Mazda Motor Corporation | 3071 |
1 |
| AVL List GmbH | 1256 |
1 |
| Beihang University | 473 |
1 |
| Beijing Institute of Technology | 353 |
1 |
| Customachinery Inc. | 8 |
1 |
| Other owners | 22 |