- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04B - Positive-displacement machines for liquidspumps
- 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: 344
10-year publication summary
|
35
|
40
|
31
|
37
|
35
|
27
|
32
|
15
|
27
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Black & Decker, Inc. | 2418 |
22 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1517 |
13 |
| Max Co., Ltd. | 845 |
13 |
| Koki Holdings Co.,Ltd | 905 |
9 |
| Makita Corporation | 2515 |
8 |
| Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 571 |
8 |
| Nabtesco Automotive Corporation | 128 |
8 |
| Thermedical, Inc. | 42 |
8 |
| Isuzu Motors Limited | 2297 |
6 |
| Robert Bosch GmbH | 43504 |
5 |
| Burckhardt Compression AG | 123 |
5 |
| Hydrostor Inc. | 60 |
5 |
| Eaton-Max, Inc. | 9 |
4 |
| Graco Minnesota Inc. | 1255 |
4 |
| Hitachi Koki Co., Ltd. | 398 |
4 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2832 |
4 |
| Milwaukee Electric Tool Corporation | 4763 |
4 |
| Wood Industries, Inc. | 15 |
4 |
| Xi'an Thermal Power Research Institute Co., Ltd. | 436 |
4 |
| Fize Medical Ltd. | 10 |
4 |
| Other owners | 202 |