Inventor
OISHI AKIFUMI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “OISHI AKIFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
YAMAHA MOTOR CO LTD
19 patentsUS7857721B2Dec 28, 2010
Belt-type continuously variable transmission and straddle-type vehicle
YAMAHA MOTOR CO LTD20 citations92
US7798927B2Sep 21, 2010
Belt-type continuously variable transmission and straddle-type vehicle
YAMAHA MOTOR CO LTD20 citations92
US7316626B2Jan 8, 2008
Engine
YAMAHA MOTOR CO LTD25 citations92
US7647995B2Jan 19, 2010
Riding type vehicle
YAMAHA MOTOR CO LTD10 citations84
US7487853B2Feb 10, 2009
Saddle-type vehicle
YAMAHA MOTOR CO LTD11 citations84
US7401589B2Jul 22, 2008
Engine
YAMAHA MOTOR CO LTD14 citations84
US7892121B2Feb 22, 2011
Straddle-type vehicle
YAMAHA MOTOR CO LTD12 citations83
US7478696B2Jan 20, 2009
Motorcycle with lowered center of gravity
YAMAHA MOTOR CO LTD7 citations74
US4754859AJul 5, 1988
One-way clutch and application therefor
YAMAHA MOTOR CO LTD19 citations68
USRE42841EOct 18, 2011
Engine with transmission
YAMAHA MOTOR CO LTD4 citations63
US7980348B2Jul 19, 2011
Motorcycle
YAMAHA MOTOR CO LTD2 citations63
US7766776B2Aug 3, 2010
V-shaped belt, belt-type transmission, and saddle type-vehicle
YAMAHA MOTOR CO LTD3 citations63
US7690466B2Apr 6, 2010
Motorcycle
YAMAHA MOTOR CO LTD4 citations63
US7549496B2Jun 23, 2009
Engine mounting arrangement for two wheeled vehicle
YAMAHA MOTOR CO LTD2 citations63
US7540348B2Jun 2, 2009
Power unit for motorcycle and motorcycle
YAMAHA MOTOR CO LTD4 citations63
US7178655B2Feb 20, 2007
Clutch-lever manipulation assisting device
YAMAHA MOTOR CO LTD2 citations63
US7168543B2Jan 30, 2007
Clutch-lever manipulation assisting device
YAMAHA MOTOR CO LTD4 citations63
US7819232B2Oct 26, 2010
Clutch and vehicle having the same
YAMAHA MOTOR CO LTD6 citations62
US7721700B2May 25, 2010
Engine unit and straddle-type vehicle provided with the same
YAMAHA MOTOR CO LTD0 citations52
OISHI AKIFUMI
6 patentsUS8202181B2Jun 19, 2012
Engine
OISHI AKIFUMI10 citations83
US8075432B2Dec 13, 2011
Engine unit and straddle type vehicle
OISHI AKIFUMI10 citations83
US8763486B2Jul 1, 2014
Stepwise automatic transmission for saddle riding type vehicle, power unit equipped with the same, and saddle riding type vehicle equipped with the same
OISHI AKIFUMI3 citations61
US8136648B2Mar 20, 2012
Clutch operation assisting device, power unit for vehicle and straddle type vehicle including the same
OISHI AKIFUMI2 citations61
US8720632B2May 13, 2014
Two-wheeled motor vehicle
OISHI AKIFUMI1 citations50
US8960398B2Feb 24, 2015
Clutch operation assisting device and power unit for straddle-type vehicle
OISHI AKIFUMI0 citations40