- 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 20/00 - Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
Patent holdings for IPC class F15B 20/00
Total number of patents in this class: 768
10-year publication summary
|
53
|
60
|
66
|
84
|
84
|
92
|
66
|
46
|
56
|
16
|
| 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 |
38 |
| Robert Bosch GmbH | 40953 |
28 |
| Fisher Controls International LLC | 1520 |
17 |
| Volvo Construction Equipment AB | 1172 |
15 |
| KYB Corporation | 1278 |
13 |
| Tadano Ltd. | 467 |
12 |
| Danfoss A/S | 1259 |
12 |
| Voith Patent GmbH | 2727 |
11 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 2856 |
11 |
| Caterpillar Inc. | 8877 |
10 |
| Hamilton Sundstrand Corporation | 4525 |
10 |
| Komatsu Ltd. | 4265 |
10 |
| Samson Aktiengesellschaft | 250 |
10 |
| SMC Corporation | 1354 |
10 |
| Ross Operating Valve Company | 57 |
9 |
| HYDAC Technology GmbH | 221 |
8 |
| Kubota Corporation | 3054 |
8 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
8 |
| Parker-Hannifin Corporation | 999 |
8 |
| Woodward, Inc. | 602 |
8 |
| Other owners | 512 |