- 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: 42
10-year publication summary
|
1
|
5
|
4
|
7
|
7
|
3
|
6
|
5
|
3
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Construction Machinery Co., Ltd. | 2684 |
8 |
| Kubota Corporation | 4160 |
5 |
| Oshkosh Corporation | 1482 |
4 |
| Robert Bosch GmbH | 43365 |
2 |
| Caterpillar Inc. | 10013 |
2 |
| Claverham Ltd. | 31 |
2 |
| Emerson Process Management Valve Automation, Inc. | 60 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8976 |
1 |
| Airbus Operations GmbH | 3393 |
1 |
| Hamilton Sundstrand Corporation | 5004 |
1 |
| Kawasaki Heavy Industries, Limited | 1632 |
1 |
| Flextronics AP, LLC | 447 |
1 |
| Hamm AG | 173 |
1 |
| HUSCO International, Inc. | 70 |
1 |
| HYDAC Fluidtechnik GmbH | 137 |
1 |
| Hydro-Gear Limited Partnership | 335 |
1 |
| Leonardo S.p.A. | 684 |
1 |
| National Oilwell Varco, L.P. | 1702 |
1 |
| Palfinger AG | 256 |
1 |
| Parker Intangibles LLC | 1194 |
1 |
| Other owners | 4 |