- 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 21/00 - Common features of fluid actuator systemsFluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
Patent holdings for IPC class F15B 21/00
Total number of patents in this class: 534
10-year publication summary
|
33
|
50
|
31
|
53
|
39
|
36
|
44
|
45
|
34
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 43244 |
22 |
| Danfoss A/S | 1378 |
15 |
| HYDAC Technology GmbH | 243 |
14 |
| Kerr Machine Co. | 159 |
13 |
| Festo SE & Co. KG | 406 |
12 |
| Caterpillar Inc. | 9983 |
11 |
| Deere & Company | 7846 |
9 |
| ZF CV Systems Europe BV | 801 |
7 |
| Hitachi Construction Machinery Co., Ltd. | 2678 |
6 |
| Schaeffler Technologies AG & Co. KG | 10505 |
6 |
| RPM Industries, LLC | 76 |
6 |
| WABCO GmbH | 470 |
6 |
| Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | 1372 |
6 |
| Boston Dynamics, Inc. | 551 |
5 |
| Blue Leaf I.P., Inc. | 2777 |
5 |
| Festo AG & Co. KG | 304 |
5 |
| Tyco Fire Products LP | 869 |
5 |
| Safran Landing Systems | 750 |
5 |
| Pratt & Whitney Canada Corp. | 5050 |
4 |
| Massachusetts Institute of Technology | 10181 |
4 |
| Other owners | 368 |