- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04D - Non-positive-displacement pumps
- F04D 29/26 - Rotors specially adapted for elastic fluids
Patent holdings for IPC class F04D 29/26
Total number of patents in this class: 493
10-year publication summary
|
51
|
61
|
45
|
42
|
62
|
41
|
47
|
37
|
36
|
11
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 40953 |
19 |
| LG Electronics Inc. | 69257 |
17 |
| Mitsubishi Heavy Industries Compressor Corporation | 613 |
14 |
| GREE Electric Appliances, Inc. of Zhuhai | 3007 |
13 |
| Dyson Technology Limited | 3124 |
11 |
| BorgWarner Inc. | 2604 |
8 |
| Siemens Energy, Inc. | 1770 |
7 |
| Praxair Technology, Inc. | 1367 |
7 |
| Ziehl-abegg SE | 184 |
7 |
| Samsung Electronics Co., Ltd. | 131630 |
6 |
| Siemens AG | 24990 |
6 |
| Delta Electronics, Inc. | 2401 |
6 |
| JPMorgan Chase Bank, National Association | 10964 |
6 |
| Edwards Limited | 764 |
6 |
| Safran Aircraft Engines | 5739 |
6 |
| Valeo Systemes Thermiques | 2471 |
6 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
6 |
| General Electric Company | 18133 |
5 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
5 |
| Pratt & Whitney Canada Corp. | 4215 |
5 |
| Other owners | 327 |