- 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: 2641
10-year publication summary
|
212
|
209
|
208
|
199
|
214
|
195
|
167
|
165
|
155
|
35
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 74705 |
88 |
| Mitsubishi Heavy Industries, Ltd. | 8999 |
84 |
| IHI Corporation | 3506 |
79 |
| Mitsubishi Heavy Industries Compressor Corporation | 634 |
78 |
| Denso Corporation | 25074 |
70 |
| Pratt & Whitney Canada Corp. | 5167 |
68 |
| Mitsubishi Electric Corporation | 47461 |
60 |
| Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | 803 |
55 |
| Panasonic Intellectual Property Management Co., Ltd. | 33202 |
40 |
| Dyson Technology Limited | 3859 |
38 |
| GREE Electric Appliances, Inc. of Zhuhai | 3272 |
33 |
| Siemens AG | 24314 |
29 |
| Daikin Industries, Ltd. | 10244 |
29 |
| Halliburton Energy Services, Inc. | 21153 |
28 |
| Nuovo Pignone Tecnologie S.r.l. | 1126 |
28 |
| Carrier Corporation | 3977 |
27 |
| Midea Group Co., Ltd. | 4797 |
27 |
| Panasonic Corporation | 19843 |
25 |
| Hamilton Sundstrand Corporation | 5010 |
25 |
| BorgWarner Inc. | 2595 |
24 |
| Other owners | 1706 |