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DIFF Subgroup
B61D 7/02

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

Introduced: September 1968

Title

Titles differ between systems:

IPC: with discharge openings in the bottoms

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

Full Title

Full titles differ between systems:

IPC:

Hopper cars > with discharge openings in the bottoms

CPC:

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)

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

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  • B61D 7/04 the openings being above axle level during discharge IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B61,2013–2023, worldwide · Source: EPO PATSTAT

  1. SIEMENS MOBILITY DE 2,749
  2. CRRC QINGDAO SIFANG COMPANY 2,215
  3. SIEMENS DE 1,941
  4. ALSTOM TRANSPORT TECHNOLOGIES FR 1,514
  5. BYD COMPANY 1,371
  6. CRRC CHANGCHUN RAILWAY VEHICLES COMPANY 1,205
  7. CRRC ZHUZHOU LOCOMOTIVE COMPANY 1,165
  8. CRRC TANGSHAN COMPANY 1,119
  9. BOMBARDIER TRANSPORTATION DE 1,001
  10. SOUTHWEST JIAOTONG UNIVERSITY 958

Top Applicants (CPC)

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