DIFF Subgroup
B60K 6/54 Transmission for changing ratio
Introduced: October 2007
Full Title
Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines > the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs > Architecture of the driveline characterised by arrangement or kind of transmission units > Transmission for changing ratio
Of 4 combined children, 2 exist in both systems.
2 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.
IPC defines codes here since 2007.
Child Classifications
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- B60K 6/543 the transmission being a continuously variable transmission since 2007 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B60,2013–2023, worldwide · Source: EPO PATSTAT
- TOYOTA MOTOR CORPORATION 28,052
- HYUNDAI MOTOR COMPANY KR 27,773
- FORD GLOBAL TECHNOLOGIES US 26,243
- KIA MOTORS CORPORATION KR 20,110
- ROBERT BOSCH DE 19,033
- TOYOTA MOTOR CORPORATION JP 17,924
- BMW (BAYERISCHE MOTOREN WERKE) DE 14,214
- HONDA MOTOR COMPANY 12,527
- AUDI DE 10,806
- GM GLOBAL TECHNOLOGY OPERATIONS US 10,336
Top Applicants (CPC)
Class B60,2013–2023, worldwide · Source: EPO PATSTAT
- HYUNDAI MOTOR COMPANY KR 31,729
- FORD GLOBAL TECHNOLOGIES US 29,270
- KIA MOTORS CORPORATION KR 23,892
- ROBERT BOSCH DE 20,384
- TOYOTA MOTOR CORPORATION JP 20,311
- TOYOTA MOTOR CORPORATION 20,237
- BMW (BAYERISCHE MOTOREN WERKE) DE 14,629
- GM GLOBAL TECHNOLOGY OPERATIONS US 11,896
- AUDI DE 11,084
- HONDA MOTOR COMPANY 10,940