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PCE
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CPC Subgroup
B61H 11/06

of hydrostatic, hydrodynamic, or aerodynamic brakes

Full Title

Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types > of hydrostatic, hydrodynamic, or aerodynamic brakes

2 direct subcodes

Child Classifications

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  • B61H 11/08 comprising a pump or the like circulating fluid, braking being effected by throttling of the circulation
  • B61H 11/10 Aerodynamic brakes with control flaps, e.g. spoilers, attached to the vehicles

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