CPC Subgroup
B61D 7/08 with openings capable of discharging only outside the wheels
Full Title
Hopper cars (flat bottomed cars convertible into hoppers B61D3/06) > with openings capable of discharging only outside the wheels
1 direct subcode
Child Classifications
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- B61D 7/10 the discharge being assisted by tipping the bottom
Top Applicants
Top 10 applicants by patent filingsfor class B61, 2013–2023, worldwide · Source: EPO PATSTAT
- SIEMENS MOBILITY DE 2,967
- SIEMENS DE 2,133
- ALSTOM TRANSPORT TECHNOLOGIES FR 1,691
- CRRC QINGDAO SIFANG COMPANY 1,100
- BOMBARDIER TRANSPORTATION DE 1,085
- MITSUBISHI ELECTRIC CORPORATION JP 880
- BYD COMPANY 821
- KRRI KR 761
- HITACHI JP 752
- CRRC ZHUZHOU LOCOMOTIVE COMPANY 721