- 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 21/14 - Energy-recuperation means
Patent holdings for IPC class F15B 21/14
Total number of patents in this class: 604
10-year publication summary
75
|
63
|
59
|
48
|
42
|
36
|
36
|
25
|
29
|
9
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Hitachi Construction Machinery Co., Ltd. | 2498 |
90 |
Caterpillar Inc. | 8877 |
38 |
Volvo Construction Equipment AB | 1172 |
37 |
Sumitomo Heavy Industries, Ltd. | 1670 |
27 |
Kayaba Industry Co., Ltd. | 376 |
26 |
Robert Bosch GmbH | 40953 |
24 |
Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 2856 |
22 |
KYB Corporation | 1278 |
15 |
Caterpillar SARL | 441 |
14 |
Kobelco Construction Machinery Co., Ltd. | 1048 |
13 |
Kawasaki Heavy Industries, Limited | 1524 |
10 |
Sunward Intelligent Equipment Co., Ltd. | 39 |
8 |
Eagle Industry Co., Ltd. | 1062 |
7 |
Shin Caterpillar Mitsubishi Ltd. | 51 |
7 |
Artemis Intelligent Power Limited | 106 |
6 |
HYDAC Technology GmbH | 221 |
6 |
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
6 |
Kobe Steel, Ltd. | 912 |
6 |
Dana Italia S.r.l. | 100 |
6 |
Danfoss A/S | 1259 |
6 |
Other owners | 230 |