- 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: 642
10-year publication summary
|
29
|
53
|
50
|
39
|
52
|
45
|
59
|
38
|
36
|
22
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Caterpillar Inc. | 10272 |
53 |
| Deere & Company | 8080 |
27 |
| Robert Bosch GmbH | 44128 |
22 |
| Volvo Construction Equipment AB | 1223 |
21 |
| Hitachi Construction Machinery Co., Ltd. | 2749 |
19 |
| Festo SE & Co. KG | 435 |
17 |
| Fisher Controls International LLC | 1460 |
15 |
| Danfoss A/S | 1428 |
14 |
| Samson Aktiengesellschaft | 276 |
10 |
| AGCO International GmbH | 718 |
9 |
| Zoomlion Heavy Industry Science and Technology Co., Ltd. | 407 |
9 |
| Komatsu Ltd. | 4703 |
8 |
| Kawasaki Heavy Industries, Limited | 1671 |
8 |
| Caterpillar SARL | 486 |
8 |
| Parker-Hannifin Corporation | 1034 |
7 |
| Woodward, Inc. | 675 |
7 |
| Dresser LLC | 294 |
7 |
| Illinois Tool Works Inc. | 11858 |
6 |
| Eaton Corporation | 1805 |
6 |
| Danfoss Power Solutions ApS | 147 |
5 |
| Other owners | 364 |