- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 25/34 - Turning or inching gear
Patent holdings for IPC class F01D 25/34
Total number of patents in this class: 114
10-year publication summary
|
3
|
12
|
15
|
18
|
12
|
14
|
15
|
6
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
30 |
| General Electric Company | 18133 |
17 |
| Hamilton Sundstrand Corporation | 4525 |
7 |
| Pratt & Whitney Canada Corp. | 4215 |
6 |
| Rolls-Royce PLC | 2944 |
6 |
| Mitsubishi Heavy Industries Compressor Corporation | 613 |
6 |
| GE Infrastructure Technology, LLC | 5873 |
5 |
| Siemens AG | 24990 |
4 |
| The Boeing Company | 19843 |
3 |
| Safran Aircraft Engines | 5739 |
3 |
| Nuovo Pignone Tecnologie S.r.l. | 789 |
3 |
| General Electric Technology GmbH | 1657 |
2 |
| Rolls-Royce Deutschland Ltd & Co KG | 765 |
2 |
| Honeywell International Inc. | 13799 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
| Siemens Energy, Inc. | 1770 |
1 |
| MTU Aero Engines GmbH | 565 |
1 |
| Nuovo Pignone SRL | 204 |
1 |
| Parker-Hannifin Corporation | 999 |
1 |
| Unison Industries, LLC | 195 |
1 |
| Other owners | 13 |