Inventor
HIRAI KIYOFUMI
JP7 patents
⚠️ This page may combine multiple inventors who share the name “HIRAI KIYOFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BRIDGESTONE CYCLE CO
5 patentsUS5045037ASep 3, 1991
Friction stepless speed change device
BRIDGESTONE CYCLE CO2 citations61
US4934205AJun 19, 1990
Stepless speed change device
BRIDGESTONE CYCLE CO2 citations61
US5163884ANov 17, 1992
Friction-type stepless speed change device
BRIDGESTONE CYCLE CO4 citations60
US4920827AMay 1, 1990
Stepless speed change device
BRIDGESTONE CYCLE CO3 citations56
US5030183AJul 9, 1991
Friction stepless speed change device
BRIDGESTONE CYCLE CO1 citations51