- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/38 - Blades
Patent holdings for IPC class F04D 29/38
Total number of patents in this class: 1835
10-year publication summary
|
166
|
204
|
155
|
175
|
125
|
116
|
117
|
116
|
110
|
78
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 10141 |
178 |
| Mitsubishi Electric Corporation | 48236 |
118 |
| General Electric Company | 13938 |
76 |
| IHI Corporation | 3534 |
45 |
| Hunter Fan Company | 907 |
42 |
| Safran Aircraft Engines | 6741 |
41 |
| Daikin Industries, Ltd. | 10513 |
40 |
| GE Infrastructure Technology, LLC | 6154 |
39 |
| Midea Group Co., Ltd. | 5060 |
35 |
| LG Electronics Inc. | 75910 |
33 |
| United Technologies Corporation | 2218 |
32 |
| Pratt & Whitney Canada Corp. | 5523 |
30 |
| Nidec Corporation | 2828 |
29 |
| Delta Electronics, Inc. | 2850 |
27 |
| Rolls-Royce PLC | 3222 |
24 |
| Delta T, LLC | 279 |
24 |
| Magenta Medical Ltd. | 199 |
21 |
| Opple Lighting Co., Ltd. | 926 |
19 |
| Suzhou Opple Lighting Co., Ltd. | 691 |
19 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 2101 |
17 |
| Other owners | 946 |