- 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: 650
10-year publication summary
|
29
|
53
|
50
|
39
|
52
|
45
|
59
|
38
|
39
|
28
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Caterpillar Inc. | 10331 |
54 |
| Deere & Company | 8198 |
27 |
| Robert Bosch GmbH | 44363 |
22 |
| Volvo Construction Equipment AB | 1225 |
21 |
| Festo SE & Co. KG | 444 |
20 |
| Hitachi Construction Machinery Co., Ltd. | 2797 |
19 |
| Fisher Controls International LLC | 1425 |
15 |
| Danfoss A/S | 1448 |
14 |
| Samson Aktiengesellschaft | 277 |
10 |
| AGCO International GmbH | 761 |
9 |
| Zoomlion Heavy Industry Science and Technology Co., Ltd. | 404 |
9 |
| Illinois Tool Works Inc. | 11894 |
8 |
| Komatsu Ltd. | 4811 |
8 |
| Kawasaki Heavy Industries, Limited | 1705 |
8 |
| Caterpillar SARL | 487 |
8 |
| Parker-Hannifin Corporation | 1045 |
7 |
| Woodward, Inc. | 678 |
7 |
| Dresser LLC | 301 |
7 |
| HD Construction Equipment Co., Ltd., HD Hyundai Infracore Co., Ltd. | 238 |
7 |
| Eaton Corporation | 1803 |
6 |
| Other owners | 364 |