- 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 11/028 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the actuating force
Patent holdings for IPC class F15B 11/028
Total number of patents in this class: 248
10-year publication summary
|
17
|
16
|
18
|
30
|
18
|
27
|
21
|
11
|
11
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Construction Machinery Co., Ltd. | 2677 |
59 |
| Kobelco Construction Machinery Co., Ltd. | 1158 |
13 |
| KYB Corporation | 1384 |
11 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3077 |
10 |
| Volvo Construction Equipment AB | 1201 |
7 |
| Sumitomo Heavy Industries, Ltd. | 1958 |
6 |
| Komatsu Ltd. | 4602 |
5 |
| Eagle Industry Co., Ltd. | 1136 |
5 |
| Kayaba Industry Co., Ltd. | 352 |
5 |
| Tadano Ltd. | 494 |
5 |
| Robert Bosch GmbH | 42861 |
4 |
| Kawasaki Heavy Industries, Limited | 1636 |
4 |
| Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 571 |
4 |
| Kubota Corporation | 4030 |
4 |
| Deere & Company | 7686 |
3 |
| Nikon Corporation | 7297 |
3 |
| Doosan Infracore Co., Ltd. | 309 |
3 |
| Sumitomo Precision Products Co., Ltd. | 311 |
3 |
| Sumitomo(s.h.i.) Construction Machinery Co., Ltd. | 243 |
3 |
| FJ Dynamics Technology Co., Ltd | 100 |
3 |
| Other owners | 88 |