CPC Main Group
B61L 23/00 Control, warning or like safety means along the route or between vehicles or trains
8 direct subcodes
Child Classifications
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- B61L 23/02 for indicating along the route the failure of brakes
- B61L 23/04 for monitoring the mechanical state of the route
- B61L 23/06 for warning men working on the route
- B61L 23/08 for controlling traffic in one direction only
- B61L 23/22 for controlling traffic in two directions over the same pair of rails
- B61L 23/34 for indicating the distance between vehicles or trains by the transmission of signals therebetween
Top Applicants
Top 10 applicants by patent filingsfor class B61, 2013–2023, worldwide · Source: EPO PATSTAT
- SIEMENS MOBILITY DE 2,967
- SIEMENS DE 2,133
- ALSTOM TRANSPORT TECHNOLOGIES FR 1,691
- CRRC QINGDAO SIFANG COMPANY 1,100
- BOMBARDIER TRANSPORTATION DE 1,085
- MITSUBISHI ELECTRIC CORPORATION JP 880
- BYD COMPANY 821
- KRRI KR 761
- HITACHI JP 752
- CRRC ZHUZHOU LOCOMOTIVE COMPANY 721