- 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 |