- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F15B - Systems acting by means of fluids in generalfluid-pressure actuators, e.g. servomotorsdetails of fluid-pressure systems, not otherwise provided for
- F15B 21/041 - Removal or measurement of solid or liquid contamination, e.g. filtering
Patent holdings for IPC class F15B 21/041
Total number of patents in this class: 129
10-year publication summary
|
3
|
10
|
15
|
16
|
19
|
16
|
15
|
18
|
12
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hamilton Sundstrand Corporation | 4906 |
8 |
| Komatsu Ltd. | 4572 |
8 |
| ZF CV Systems Europe BV | 778 |
6 |
| HYDAC Technology GmbH | 237 |
5 |
| Deere & Company | 7636 |
4 |
| Blue Leaf I.P., Inc. | 2800 |
4 |
| AVL List GmbH | 1300 |
3 |
| Quantum-Si Incorporated | 455 |
3 |
| Yamashin-filter Corp. | 128 |
3 |
| Semyungtech Co., Ltd. | 14 |
3 |
| Robert Bosch GmbH | 42784 |
2 |
| Caterpillar Inc. | 9604 |
2 |
| ARBURG GmbH + Co. KG | 146 |
2 |
| Audi AG | 7372 |
2 |
| Energy Recovery, Inc. | 176 |
2 |
| iwis motorsysteme GmbH & Co. KG | 120 |
2 |
| Kubota Corporation | 3943 |
2 |
| Nidec Tosok Corporation | 206 |
2 |
| Volkswagen AG | 7339 |
2 |
| Volvo Construction Equipment AB | 1197 |
2 |
| Other owners | 62 |