- All sections
- B - Performing operationstransporting
- B60T - Vehicle brake control systems or parts thereofbrake control systems or parts thereof, in generalarrangement of braking elements on vehicles in generalportable devices for preventing unwanted movement of vehiclesvehicle modifications to facilitate cooling of brakes
- B60T 15/18 - Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed-air or vacuum source or atmosphere
Patent holdings for IPC class B60T 15/18
Total number of patents in this class: 122
10-year publication summary
|
12
|
15
|
14
|
9
|
4
|
5
|
7
|
6
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| New York Air Brake LLC | 266 |
17 |
| Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 572 |
13 |
| ZF CV Systems Europe BV | 782 |
10 |
| WABCO GmbH | 475 |
9 |
| Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | 1400 |
8 |
| Bendix Commercial Vehicle Systems LLC | 876 |
7 |
| KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH | 623 |
7 |
| Westinghouse Air Brake Technologies Corporation | 503 |
5 |
| Amsted Rail Company, Inc. | 439 |
3 |
| Nabtesco Corporation | 886 |
3 |
| New York Air Brake Corporation | 91 |
3 |
| Wabtec Holding Corp. | 374 |
3 |
| Siemens AG | 24386 |
2 |
| Robert Bosch GmbH | 42824 |
2 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 111 |
2 |
| Haldex AB | 90 |
2 |
| Haldex Brake Products Corporation | 86 |
2 |
| Matisa Materiel Industriel SA | 74 |
2 |
| WABCO Europe BVBA | 220 |
2 |
| Wuhan University of Technology | 192 |
2 |
| Other owners | 18 |