- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/44 - Fluid-guiding means, e.g. diffusers
Patent holdings for IPC class F04D 29/44
Total number of patents in this class: 2660
10-year publication summary
|
221
|
213
|
211
|
213
|
223
|
204
|
180
|
172
|
159
|
57
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 75045 |
88 |
| Mitsubishi Heavy Industries, Ltd. | 9023 |
84 |
| IHI Corporation | 3516 |
80 |
| Mitsubishi Heavy Industries Compressor Corporation | 635 |
78 |
| Denso Corporation | 25232 |
70 |
| Pratt & Whitney Canada Corp. | 5226 |
68 |
| Mitsubishi Electric Corporation | 47625 |
60 |
| Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | 808 |
55 |
| Panasonic Intellectual Property Management Co., Ltd. | 33602 |
40 |
| Dyson Technology Limited | 3907 |
39 |
| GREE Electric Appliances, Inc. of Zhuhai | 3281 |
33 |
| Daikin Industries, Ltd. | 10393 |
31 |
| Siemens AG | 24199 |
29 |
| Halliburton Energy Services, Inc. | 21217 |
28 |
| Carrier Corporation | 3967 |
28 |
| Nuovo Pignone Tecnologie S.r.l. | 1151 |
28 |
| Midea Group Co., Ltd. | 4856 |
27 |
| Panasonic Corporation | 19577 |
25 |
| Hamilton Sundstrand Corporation | 5018 |
25 |
| BorgWarner Inc. | 2582 |
24 |
| Other owners | 1720 |