Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Subgroup
B61D 7/02

with discharge openings in the bottoms (with body in two halves and discharge by tipping the halves B61D9/00)

Full Title

Hopper cars (flat bottomed cars convertible into hoppers B61D3/06) > with discharge openings in the bottoms (with body in two halves and discharge by tipping the halves B61D9/00)

1 direct subcode

Child Classifications

Navigate with arrow keys, Enter to open

  • B61D 7/04 the openings being above axle level during discharge

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