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CPC Subgroup
B61H 13/28

with variable leverage or mechanical advantage to obtain quick take-up

Full Title

Actuating rail-vehicle brakes > Transmitting mechanisms > with variable leverage or mechanical advantage to obtain quick take-up

Filing statistics

CPC B61H 13/28 belongs to the parent subclass B61H, which recorded 6,404 patent applications worldwide between 2013 and 2023. Annual filings grew from 355 in 2013 to 434 in 2023 (+22%), peaking at 765 applications in 2018. The most active applicants in class B61 are SIEMENS MOBILITY (2,967 applications), SIEMENS (2,133 applications) and ALSTOM TRANSPORT TECHNOLOGIES (1,691 applications).

Source: EPO PATSTAT, worldwide filings

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