- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04D - Non-positive-displacement pumps
- F04D 19/02 - Multi-stage pumps
Patent holdings for IPC class F04D 19/02
Total number of patents in this class: 395
10-year publication summary
|
34
|
48
|
75
|
61
|
38
|
46
|
31
|
26
|
23
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
53 |
| General Electric Company | 18133 |
23 |
| Safran Aircraft Engines | 5739 |
14 |
| Pratt & Whitney Canada Corp. | 4215 |
13 |
| Nuovo Pignone Tecnologie S.r.l. | 789 |
13 |
| Rolls-Royce PLC | 2944 |
10 |
| MTU Aero Engines AG | 622 |
10 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
10 |
| OneSubsea IP UK Limited | 378 |
9 |
| Safran Aero Boosters SA | 180 |
9 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
8 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
8 |
| Rolls-Royce Corporation | 1686 |
7 |
| Upwing Energy, Inc. | 49 |
7 |
| Delta Electronics, Inc. | 2401 |
6 |
| Nidec Corporation | 2579 |
6 |
| GE Infrastructure Technology, LLC | 5873 |
6 |
| The Penn State Research Foundation | 1423 |
5 |
| Tc1 LLC | 591 |
5 |
| Siemens AG | 24990 |
4 |
| Other owners | 169 |