- 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 13/044 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
Patent holdings for IPC class F15B 13/044
Total number of patents in this class: 444
10-year publication summary
|
29
|
38
|
48
|
46
|
34
|
35
|
26
|
38
|
22
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Caterpillar Inc. | 9158 |
19 |
| Volvo Construction Equipment AB | 1193 |
19 |
| HYDAC Fluidtechnik GmbH | 134 |
12 |
| Woodward, Inc. | 628 |
12 |
| Danfoss A/S | 1316 |
12 |
| Hamilton Sundstrand Corporation | 4724 |
11 |
| Sun Hydraulics, LLC | 67 |
10 |
| Deere & Company | 7336 |
9 |
| Hitachi Construction Machinery Co., Ltd. | 2564 |
9 |
| Kawasaki Heavy Industries, Limited | 1585 |
9 |
| Kubota Corporation | 3492 |
8 |
| Mac Valves, Inc. | 83 |
8 |
| Festo SE & Co. KG | 359 |
8 |
| Robert Bosch GmbH | 41765 |
7 |
| BorgWarner Inc. | 2587 |
7 |
| Moog Inc. | 419 |
7 |
| Bucher Hydraulics GmbH | 11 |
6 |
| Clearmotion, Inc. | 160 |
6 |
| Blue Leaf I.P., Inc. | 2828 |
5 |
| Doosan Infracore Co., Ltd. | 309 |
5 |
| Other owners | 255 |