- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 15/12 - Combinations with mechanical gearing
Patent holdings for IPC class F01D 15/12
Total number of patents in this class: 542
10-year publication summary
|
89
|
70
|
71
|
44
|
51
|
43
|
36
|
34
|
35
|
18
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9461 |
199 |
| General Electric Company | 13858 |
39 |
| Pratt & Whitney Canada Corp. | 4834 |
32 |
| Rolls-Royce PLC | 3134 |
31 |
| Safran Aircraft Engines | 6316 |
28 |
| Hamilton Sundstrand Corporation | 4923 |
18 |
| Safran Transmission Systems | 317 |
18 |
| United Technologies Corporation | 2241 |
17 |
| Rolls-Royce Deutschland Ltd & Co KG | 819 |
13 |
| GE Avio S.r.l. | 284 |
9 |
| Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 456 |
9 |
| Rolls-Royce Corporation | 1760 |
8 |
| Nuovo Pignone Tecnologie S.r.l. | 1004 |
7 |
| Rolls-Royce North American Technologies, Inc. | 1170 |
6 |
| GE Infrastructure Technology, LLC | 6250 |
5 |
| The Boeing Company | 20131 |
4 |
| MTU Aero Engines AG | 691 |
4 |
| Sanden Corporation | 965 |
4 |
| Unison Industries, LLC | 210 |
4 |
| Man Energy Solutions SE | 256 |
4 |
| Other owners | 83 |