- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
Patent holdings for IPC class F04D 29/28
Total number of patents in this class: 2394
10-year publication summary
|
326
|
255
|
256
|
187
|
202
|
185
|
180
|
171
|
137
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries Compressor Corporation | 631 |
92 |
| Mitsubishi Electric Corporation | 47065 |
82 |
| LG Electronics Inc. | 73936 |
74 |
| Denso Corporation | 24842 |
66 |
| Mitsubishi Heavy Industries, Ltd. | 8919 |
61 |
| Daikin Industries, Ltd. | 10169 |
52 |
| Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | 797 |
48 |
| IHI Corporation | 3468 |
47 |
| Nuovo Pignone Tecnologie S.r.l. | 1070 |
46 |
| Delta Electronics, Inc. | 2697 |
42 |
| ebm-papst Mulfingen GmbH & Co. KG | 606 |
40 |
| BorgWarner Inc. | 2599 |
36 |
| Samsung Electronics Co., Ltd. | 149582 |
34 |
| Pratt & Whitney Canada Corp. | 4969 |
33 |
| Nidec Corporation | 2714 |
29 |
| Carrier Corporation | 3993 |
28 |
| Robert Bosch GmbH | 43116 |
25 |
| Regal Beloit America, Inc. | 865 |
24 |
| Panasonic Intellectual Property Management Co., Ltd. | 32590 |
23 |
| Hamilton Sundstrand Corporation | 4971 |
23 |
| Other owners | 1489 |