- 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: 1780
10-year publication summary
|
161
|
200
|
149
|
170
|
121
|
116
|
115
|
107
|
105
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9666 |
176 |
| Mitsubishi Electric Corporation | 47240 |
116 |
| General Electric Company | 13799 |
63 |
| IHI Corporation | 3485 |
49 |
| Hunter Fan Company | 834 |
41 |
| Safran Aircraft Engines | 6454 |
40 |
| Daikin Industries, Ltd. | 10200 |
39 |
| GE Infrastructure Technology, LLC | 6203 |
39 |
| Midea Group Co., Ltd. | 4710 |
35 |
| United Technologies Corporation | 2225 |
32 |
| Pratt & Whitney Canada Corp. | 4995 |
31 |
| LG Electronics Inc. | 74135 |
30 |
| Delta Electronics, Inc. | 2711 |
26 |
| Rolls-Royce PLC | 3173 |
24 |
| Nidec Corporation | 2723 |
24 |
| Delta T, LLC | 282 |
23 |
| Magenta Medical Ltd. | 178 |
21 |
| Opple Lighting Co., Ltd. | 865 |
19 |
| Suzhou Opple Lighting Co., Ltd. | 642 |
18 |
| Mitsubishi Heavy Industries, Ltd. | 8938 |
16 |
| Other owners | 918 |