- All sections
- B - Performing operations; transporting
- B60T - Vehicle brake control systems or parts thereof; brake control systems or parts thereof, in general; arrangement of braking elements on vehicles in general; portable devices for preventing unwanted movement of vehicles; vehicle 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: 121
10-year publication summary
11
|
15
|
17
|
16
|
9
|
5
|
5
|
7
|
6
|
2
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
New York Air Brake LLC | 261 |
16 |
Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 566 |
13 |
ZF CV Systems Europe BV | 682 |
10 |
WABCO GmbH | 483 |
9 |
Bendix Commercial Vehicle Systems LLC | 898 |
8 |
Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | 1407 |
8 |
KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH | 578 |
7 |
Westinghouse Air Brake Technologies Corporation | 521 |
5 |
Amsted Rail Company, Inc. | 432 |
3 |
Nabtesco Corporation | 871 |
3 |
New York Air Brake Corporation | 110 |
3 |
Wabtec Holding Corp. | 407 |
3 |
ZF CV Systems Global GmbH | 275 |
3 |
Siemens AG | 24990 |
2 |
Robert Bosch GmbH | 40953 |
2 |
Haldex Brake Products AB | 170 |
2 |
Haldex Brake Products Corporation | 93 |
2 |
Matisa Materiel Industriel SA | 66 |
2 |
WABCO Europe BVBA | 228 |
2 |
Wuhan University of Technology | 159 |
2 |
Other owners | 16 |