- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 494
10-year publication summary
26
|
90
|
71
|
72
|
45
|
54
|
44
|
37
|
35
|
7
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Rtx Corporation | 8674 |
188 |
General Electric Company | 18133 |
29 |
Rolls-Royce PLC | 2944 |
28 |
Safran Aircraft Engines | 5739 |
28 |
Pratt & Whitney Canada Corp. | 4215 |
25 |
United Technologies Corporation | 2328 |
18 |
Hamilton Sundstrand Corporation | 4525 |
17 |
Safran Transmission Systems | 260 |
13 |
Rolls-Royce Deutschland Ltd & Co KG | 765 |
12 |
Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 396 |
9 |
Rolls-Royce Corporation | 1686 |
8 |
Nuovo Pignone Tecnologie S.r.l. | 789 |
7 |
GE Avio S.r.l. | 223 |
6 |
Rolls-Royce North American Technologies, Inc. | 1079 |
6 |
GE Infrastructure Technology, LLC | 5873 |
5 |
The Boeing Company | 19843 |
4 |
Sanden Corporation | 859 |
4 |
Unison Industries, LLC | 195 |
4 |
Man Energy Solutions SE | 274 |
4 |
Siemens AG | 24990 |
3 |
Other owners | 76 |