- 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: 2677
10-year publication summary
|
221
|
213
|
211
|
213
|
224
|
204
|
181
|
171
|
160
|
91
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 75694 |
88 |
| Mitsubishi Heavy Industries, Ltd. | 9128 |
84 |
| IHI Corporation | 3535 |
80 |
| Mitsubishi Heavy Industries Compressor Corporation | 640 |
79 |
| Pratt & Whitney Canada Corp. | 5479 |
72 |
| Denso Corporation | 25534 |
70 |
| Mitsubishi Electric Corporation | 48018 |
61 |
| Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | 825 |
55 |
| Panasonic Intellectual Property Management Co., Ltd. | 33997 |
41 |
| Dyson Technology Limited | 3997 |
39 |
| GREE Electric Appliances, Inc. of Zhuhai | 3316 |
34 |
| Daikin Industries, Ltd. | 10499 |
31 |
| Siemens AG | 24029 |
29 |
| Nuovo Pignone Tecnologie S.r.l. | 1216 |
29 |
| Halliburton Energy Services, Inc. | 21338 |
28 |
| Carrier Corporation | 3955 |
28 |
| Midea Group Co., Ltd. | 5028 |
26 |
| Panasonic Corporation | 19019 |
25 |
| Hamilton Sundstrand Corporation | 5015 |
25 |
| BorgWarner Inc. | 2583 |
24 |
| Other owners | 1729 |