- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04D - Non-positive-displacement pumps
- F04D 29/54 - Fluid-guiding means, e.g. diffusers
Patent holdings for IPC class F04D 29/54
Total number of patents in this class: 1880
10-year publication summary
|
159
|
240
|
260
|
281
|
165
|
170
|
99
|
124
|
97
|
45
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
221 |
| Safran Aircraft Engines | 5739 |
104 |
| General Electric Company | 18133 |
84 |
| GE Infrastructure Technology, LLC | 5873 |
67 |
| IHI Corporation | 3268 |
54 |
| Pratt & Whitney Canada Corp. | 4215 |
36 |
| Mitsubishi Electric Corporation | 43934 |
31 |
| MTU Aero Engines AG | 622 |
30 |
| ebm-papst Mulfingen GmbH & Co. KG | 608 |
29 |
| Siemens AG | 24990 |
26 |
| Safran Aero Boosters SA | 180 |
25 |
| Delta Electronics, Inc. | 2401 |
24 |
| Airius IP Holdings, LLC | 62 |
24 |
| Snecma | 1065 |
23 |
| SNECMA S.A. | 1160 |
22 |
| Denso Corporation | 23338 |
22 |
| Mitsubishi Power, Ltd. | 1680 |
22 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
21 |
| Rolls-Royce PLC | 2944 |
20 |
| Nidec Corporation | 2579 |
20 |
| Other owners | 975 |