- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 19/00 - Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
Patent holdings for IPC class F01D 19/00
Total number of patents in this class: 360
10-year publication summary
|
38
|
33
|
38
|
40
|
30
|
33
|
18
|
21
|
18
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
27 |
| Siemens AG | 24990 |
22 |
| Safran Helicopter Engines | 676 |
20 |
| General Electric Company | 18133 |
18 |
| Pratt & Whitney Canada Corp. | 4215 |
18 |
| GE Infrastructure Technology, LLC | 5873 |
17 |
| Safran Aircraft Engines | 5739 |
16 |
| Rolls-Royce PLC | 2944 |
13 |
| Hamilton Sundstrand Corporation | 4525 |
13 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
13 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
12 |
| Mitsubishi Power, Ltd. | 1680 |
10 |
| Nuovo Pignone Tecnologie S.r.l. | 789 |
9 |
| Ice Thermal Harvesting, LLC | 68 |
9 |
| Rolls-Royce Corporation | 1686 |
7 |
| Unison Industries, LLC | 195 |
7 |
| Turbomeca | 232 |
6 |
| General Electric Technology GmbH | 1657 |
5 |
| Safran Electrical & Power | 507 |
5 |
| Honeywell International Inc. | 13799 |
4 |
| Other owners | 109 |