- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F02C - Gas-turbine plants; air intakes for jet-propulsion plants; controlling fuel supply in air-breathing jet-propulsion plants
- F02C 7/28 - Arrangement of seals
Patent holdings for IPC class F02C 7/28
Total number of patents in this class: 1236
10-year publication summary
|
131
|
140
|
118
|
129
|
103
|
98
|
76
|
93
|
44
|
15
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
277 |
| United Technologies Corporation | 2328 |
152 |
| Pratt & Whitney Canada Corp. | 4215 |
98 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
69 |
| Mitsubishi Hitachi Power Systems, Ltd. | 999 |
57 |
| Safran Aircraft Engines | 5739 |
56 |
| General Electric Company | 18133 |
54 |
| Mitsubishi Power, Ltd. | 1680 |
49 |
| Rolls-Royce PLC | 2944 |
21 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
21 |
| GE Infrastructure Technology, LLC | 5873 |
21 |
| Eagle Industry Co., Ltd. | 1062 |
19 |
| Siemens AG | 24990 |
18 |
| IHI Corporation | 3268 |
18 |
| Rolls-Royce Corporation | 1686 |
18 |
| SNECMA S.A. | 1160 |
15 |
| Solar Turbines Incorporated | 452 |
13 |
| Mitsubishi Heavy Industries Aero Engines, Ltd. | 121 |
12 |
| Snecma | 1065 |
12 |
| Rohr, Inc. | 653 |
11 |
| Other owners | 225 |