- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F15B - Systems acting by means of fluids in general; fluid-pressure actuators, e.g. servomotors; details 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: 564
10-year publication summary
30
|
32
|
29
|
53
|
50
|
39
|
51
|
45
|
50
|
8
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Caterpillar Inc. | 8877 |
56 |
Deere & Company | 6845 |
28 |
Volvo Construction Equipment AB | 1172 |
21 |
Robert Bosch GmbH | 40953 |
18 |
Hitachi Construction Machinery Co., Ltd. | 2498 |
14 |
Fisher Controls International LLC | 1520 |
14 |
Danfoss A/S | 1259 |
12 |
Festo SE & Co. KG | 349 |
10 |
Komatsu Ltd. | 4265 |
8 |
Parker-Hannifin Corporation | 999 |
8 |
Samson Aktiengesellschaft | 250 |
7 |
Zoomlion Heavy Industry Science and Technology Co., Ltd. | 344 |
7 |
HD Hyundai Infracore Co., Ltd | 252 |
7 |
Eaton Corporation | 1839 |
6 |
AGCO International GmbH | 504 |
6 |
Dresser LLC | 230 |
6 |
Illinois Tool Works Inc. | 11152 |
5 |
Kawasaki Heavy Industries, Limited | 1524 |
5 |
Caterpillar SARL | 441 |
5 |
Danfoss Power Solutions ApS | 146 |
5 |
Other owners | 316 |