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PCE
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CPC Subgroup
B61L 23/30

using automatic section blocking

Full Title

Control, warning or like safety means along the route or between vehicles or trains > for controlling traffic in two directions over the same pair of rails > using automatic section blocking

1 direct subcode

Child Classifications

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  • B61L 23/32 with provision for the blocking of passing sidings

Top Applicants

Top 10 applicants by patent filingsfor class B61, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SIEMENS MOBILITY DE 2,967
  2. SIEMENS DE 2,133
  3. ALSTOM TRANSPORT TECHNOLOGIES FR 1,691
  4. CRRC QINGDAO SIFANG COMPANY 1,100
  5. BOMBARDIER TRANSPORTATION DE 1,085
  6. MITSUBISHI ELECTRIC CORPORATION JP 880
  7. BYD COMPANY 821
  8. KRRI KR 761
  9. HITACHI JP 752
  10. CRRC ZHUZHOU LOCOMOTIVE COMPANY 721