- 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 21/08 - Servomotor systems incorporating electrically- operated control means
Patent holdings for IPC class F15B 21/08
Total number of patents in this class: 603
10-year publication summary
|
32
|
29
|
53
|
50
|
39
|
52
|
44
|
57
|
30
|
16
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Caterpillar Inc. | 9548 |
57 |
| Deere & Company | 7605 |
26 |
| Volvo Construction Equipment AB | 1191 |
21 |
| Robert Bosch GmbH | 42689 |
19 |
| Hitachi Construction Machinery Co., Ltd. | 2643 |
16 |
| Fisher Controls International LLC | 1488 |
15 |
| Danfoss A/S | 1355 |
13 |
| Festo SE & Co. KG | 386 |
10 |
| Samson Aktiengesellschaft | 279 |
9 |
| Zoomlion Heavy Industry Science and Technology Co., Ltd. | 376 |
9 |
| AGCO International GmbH | 605 |
8 |
| Parker-Hannifin Corporation | 1037 |
8 |
| Komatsu Ltd. | 4544 |
7 |
| Kawasaki Heavy Industries, Limited | 1629 |
7 |
| Caterpillar SARL | 476 |
7 |
| Dresser LLC | 268 |
7 |
| HD Hyundai Infracore Co., Ltd | 278 |
7 |
| Illinois Tool Works Inc. | 11470 |
6 |
| Eaton Corporation | 1820 |
6 |
| Danfoss Power Solutions ApS | 147 |
5 |
| Other owners | 340 |