- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F23R - Generating combustion products of high pressure or high velocity, e.g. gas-turbine combustion chambers
- F23R 3/04 - Air inlet arrangements
Patent holdings for IPC class F23R 3/04
Total number of patents in this class: 439
10-year publication summary
|
77
|
49
|
36
|
53
|
31
|
21
|
15
|
22
|
13
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9257 |
71 |
| General Electric Company | 17073 |
65 |
| GE Infrastructure Technology, LLC | 6183 |
48 |
| Pratt & Whitney Canada Corp. | 4493 |
27 |
| Siemens AG | 24538 |
17 |
| Rolls-Royce Corporation | 1721 |
15 |
| Safran Aircraft Engines | 6189 |
13 |
| Rolls-Royce PLC | 3020 |
12 |
| Mitsubishi Power, Ltd. | 1752 |
12 |
| Siemens Energy, Inc. | 1697 |
11 |
| Doosan Heavy Industries & Construction Co., Ltd. | 581 |
11 |
| Ansaldo Energia Switzerland AG | 278 |
10 |
| SNECMA S.A. | 1145 |
8 |
| ExxonMobil Upstream Research Company | 2413 |
8 |
| Rolls-Royce North American Technologies, Inc. | 1156 |
8 |
| Siemens Energy Global GmbH & Co. KG | 2889 |
8 |
| Honeywell International Inc. | 13604 |
6 |
| King Fahd University of Petroleum and Minerals | 1120 |
6 |
| Mitsubishi Heavy Industries, Ltd. | 8591 |
5 |
| Safran Helicopter Engines | 740 |
5 |
| Other owners | 73 |