- 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 21/045 - Compensating for variations in viscosity or temperature
Patent holdings for IPC class F15B 21/045
Total number of patents in this class: 43
10-year publication summary
|
1
|
1
|
5
|
4
|
7
|
7
|
4
|
6
|
5
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Construction Machinery Co., Ltd. | 2645 |
8 |
| Kubota Corporation | 3932 |
5 |
| Oshkosh Corporation | 1315 |
4 |
| Robert Bosch GmbH | 42742 |
2 |
| Caterpillar Inc. | 9594 |
2 |
| Claverham Ltd. | 31 |
2 |
| Emerson Process Management Valve Automation, Inc. | 58 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8777 |
1 |
| Airbus Operations GmbH | 3346 |
1 |
| Hamilton Sundstrand Corporation | 4902 |
1 |
| Kawasaki Heavy Industries, Limited | 1650 |
1 |
| CNH Industrial America LLC | 1882 |
1 |
| Flextronics AP, LLC | 465 |
1 |
| Hamm AG | 167 |
1 |
| HUSCO International, Inc. | 68 |
1 |
| HYDAC Fluidtechnik GmbH | 138 |
1 |
| Hydro-Gear Limited Partnership | 344 |
1 |
| Leonardo S.p.A. | 666 |
1 |
| National Oilwell Varco, L.P. | 1682 |
1 |
| Palfinger AG | 241 |
1 |
| Other owners | 5 |