- 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: 619
10-year publication summary
|
63
|
59
|
48
|
42
|
36
|
36
|
28
|
35
|
22
|
10
|
| 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. | 2623 |
91 |
| Caterpillar Inc. | 9472 |
38 |
| Volvo Construction Equipment AB | 1186 |
38 |
| Sumitomo Heavy Industries, Ltd. | 1875 |
27 |
| Kayaba Industry Co., Ltd. | 358 |
26 |
| Robert Bosch GmbH | 42450 |
24 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3067 |
22 |
| Kobelco Construction Machinery Co., Ltd. | 1133 |
14 |
| KYB Corporation | 1353 |
14 |
| Caterpillar SARL | 477 |
13 |
| Eagle Industry Co., Ltd. | 1125 |
12 |
| Kawasaki Heavy Industries, Limited | 1616 |
10 |
| Sunward Intelligent Equipment Co., Ltd. | 39 |
8 |
| HD Hyundai Infracore Co., Ltd | 272 |
8 |
| Komatsu Ltd. | 4505 |
7 |
| Danfoss A/S | 1348 |
7 |
| Artemis Intelligent Power Limited | 100 |
6 |
| HYDAC Technology GmbH | 233 |
6 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2872 |
6 |
| Kobe Steel, Ltd. | 870 |
6 |
| Other owners | 236 |