- 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 11/08 - Servomotor systems without provision for follow-up action with only one servomotor
Patent holdings for IPC class F15B 11/08
Total number of patents in this class: 680
10-year publication summary
|
89
|
77
|
76
|
51
|
62
|
30
|
43
|
32
|
23
|
20
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Construction Machinery Co., Ltd. | 2807 |
124 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3308 |
47 |
| KYB Corporation | 1441 |
31 |
| Komatsu Ltd. | 4827 |
25 |
| Kubota Corporation | 4444 |
18 |
| Deere & Company | 8229 |
16 |
| Kobelco Construction Machinery Co., Ltd. | 1226 |
16 |
| Caterpillar Inc. | 10343 |
14 |
| Kawasaki Heavy Industries, Limited | 1709 |
13 |
| Kayaba Industry Co., Ltd. | 342 |
12 |
| Blue Leaf I.P., Inc. | 2929 |
11 |
| HD Construction Equipment Co., Ltd., HD Hyundai Infracore Co., Ltd. | 242 |
8 |
| Showa Corporation | 188 |
7 |
| Nabtesco Corporation | 866 |
6 |
| Parker Intangibles LLC | 1163 |
6 |
| Sumitomo Heavy Industries, Ltd. | 2137 |
6 |
| Voith Patent GmbH | 2742 |
6 |
| The Boeing Company | 20217 |
5 |
| Robert Bosch GmbH | 44398 |
5 |
| Aisin AW Co., Ltd. | 2244 |
5 |
| Other owners | 299 |