- 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 21/14 - Energy-recuperation means
Patent holdings for IPC class F15B 21/14
Total number of patents in this class: 625
10-year publication summary
|
63
|
58
|
47
|
40
|
35
|
36
|
27
|
35
|
22
|
19
|
| 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. | 2686 |
94 |
| Caterpillar Inc. | 9768 |
38 |
| Volvo Construction Equipment AB | 1213 |
37 |
| Sumitomo Heavy Industries, Ltd. | 1975 |
27 |
| Kayaba Industry Co., Ltd. | 349 |
26 |
| Robert Bosch GmbH | 43063 |
25 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3102 |
22 |
| Kobelco Construction Machinery Co., Ltd. | 1161 |
14 |
| KYB Corporation | 1392 |
14 |
| Caterpillar SARL | 480 |
13 |
| Eagle Industry Co., Ltd. | 1147 |
12 |
| Kawasaki Heavy Industries, Limited | 1647 |
10 |
| HD Hyundai Infracore Co., Ltd | 284 |
10 |
| Sunward Intelligent Equipment Co., Ltd. | 39 |
8 |
| Komatsu Ltd. | 4621 |
7 |
| Danfoss A/S | 1362 |
7 |
| Artemis Intelligent Power Limited | 100 |
6 |
| HYDAC Technology GmbH | 242 |
6 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2866 |
6 |
| Kobe Steel, Ltd. | 885 |
6 |
| Other owners | 237 |