- 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: 2606
10-year publication summary
|
209
|
212
|
209
|
208
|
199
|
214
|
195
|
167
|
165
|
152
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 73825 |
86 |
| Mitsubishi Heavy Industries, Ltd. | 8900 |
84 |
| Mitsubishi Heavy Industries Compressor Corporation | 631 |
78 |
| IHI Corporation | 3471 |
77 |
| Denso Corporation | 24797 |
69 |
| Pratt & Whitney Canada Corp. | 4958 |
65 |
| Mitsubishi Electric Corporation | 46973 |
59 |
| Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | 797 |
55 |
| Panasonic Intellectual Property Management Co., Ltd. | 32504 |
39 |
| Dyson Technology Limited | 3760 |
38 |
| GREE Electric Appliances, Inc. of Zhuhai | 3257 |
33 |
| Siemens AG | 24333 |
29 |
| Daikin Industries, Ltd. | 10174 |
29 |
| Nuovo Pignone Tecnologie S.r.l. | 1056 |
29 |
| Carrier Corporation | 4007 |
27 |
| Halliburton Energy Services, Inc. | 21090 |
26 |
| Panasonic Corporation | 19952 |
26 |
| Midea Group Co., Ltd. | 4684 |
26 |
| Hamilton Sundstrand Corporation | 4956 |
24 |
| BorgWarner Inc. | 2601 |
24 |
| Other owners | 1683 |