- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04B - Positive-displacement machines for liquids; pumps
- F04B 41/02 - Pumping installations or systems specially adapted for elastic fluids having reservoirs
Patent holdings for IPC class F04B 41/02
Total number of patents in this class: 315
10-year publication summary
|
34
|
38
|
41
|
31
|
39
|
36
|
26
|
29
|
15
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Black & Decker, Inc. | 2405 |
21 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1402 |
13 |
| Max Co., Ltd. | 882 |
13 |
| Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 568 |
9 |
| Makita Corporation | 2408 |
8 |
| Nabtesco Automotive Corporation | 128 |
8 |
| Koki Holdings Co.,Ltd | 856 |
8 |
| Thermedical, Inc. | 39 |
7 |
| Isuzu Motors Limited | 2238 |
6 |
| Burckhardt Compression AG | 116 |
5 |
| Hydrostor Inc. | 57 |
5 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2905 |
5 |
| Hitachi Koki Co., Ltd. | 423 |
4 |
| Milwaukee Electric Tool Corporation | 4084 |
4 |
| Wood Industries, Inc. | 15 |
4 |
| Xi'an Thermal Power Research Institute Co., Ltd. | 293 |
4 |
| Fize Medical Ltd. | 10 |
4 |
| Murata Manufacturing Co., Ltd. | 23648 |
3 |
| Eaton-Max, Inc. | 7 |
3 |
| Edwards Limited | 799 |
3 |
| Other owners | 178 |