- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 2209
10-year publication summary
|
199
|
316
|
331
|
259
|
260
|
190
|
210
|
186
|
172
|
65
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries Compressor Corporation | 613 |
91 |
| Mitsubishi Electric Corporation | 43934 |
77 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
64 |
| Denso Corporation | 23338 |
61 |
| LG Electronics Inc. | 69257 |
60 |
| Daikin Industries, Ltd. | 9495 |
54 |
| Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | 699 |
45 |
| ebm-papst Mulfingen GmbH & Co. KG | 608 |
41 |
| IHI Corporation | 3268 |
40 |
| BorgWarner Inc. | 2604 |
39 |
| Nuovo Pignone Tecnologie S.r.l. | 789 |
39 |
| Delta Electronics, Inc. | 2401 |
38 |
| Nidec Corporation | 2579 |
31 |
| Samsung Electronics Co., Ltd. | 131630 |
27 |
| Pratt & Whitney Canada Corp. | 4215 |
27 |
| Robert Bosch GmbH | 40953 |
26 |
| Carrier Corporation | 4759 |
26 |
| Regal Beloit America, Inc. | 939 |
24 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
23 |
| GREE Electric Appliances, Inc. of Zhuhai | 3007 |
21 |
| Other owners | 1355 |