- 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 21/047 - Preventing foaming, churning or cavitation
Patent holdings for IPC class F15B 21/047
Total number of patents in this class: 37
10-year publication summary
|
1
|
1
|
7
|
5
|
3
|
3
|
8
|
2
|
6
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 44291 |
4 |
| Caterpillar Inc. | 10302 |
3 |
| Hitachi Construction Machinery Co., Ltd. | 2771 |
2 |
| Bucher Hydraulics AG | 32 |
2 |
| Danfoss Power Solutions II Technology A/S | 45 |
2 |
| Readi Robust Machine Co., Ltd. | 17 |
2 |
| Halliburton Energy Services, Inc. | 21284 |
1 |
| Airbus Operations Limited | 1353 |
1 |
| Schaeffler Technologies AG & Co. KG | 11159 |
1 |
| Komatsu Ltd. | 4770 |
1 |
| Kawasaki Heavy Industries, Limited | 1693 |
1 |
| Purdue Research Foundation | 3950 |
1 |
| HYDAC Fluidtechnik GmbH | 139 |
1 |
| HYDAC Technology GmbH | 247 |
1 |
| Kobelco Construction Machinery Co., Ltd. | 1214 |
1 |
| Manitowoc Crane Group France SAS | 110 |
1 |
| Newsouth Innovations Pty Limited | 627 |
1 |
| Parker-Hannifin Corporation | 1042 |
1 |
| Parker Intangibles LLC | 1164 |
1 |
| Shandong University of Science and Technology | 546 |
1 |
| Other owners | 8 |