Inventor

OBATA KOSEI

JP6 patents

Patents

6 patents

US4684210AAug 4, 1987

Light transmission device

ALPS ELECTRIC CO LTD58 citations95

US4807091AFeb 21, 1989

Illuminating device for an electric part

ALPS ELECTRIC CO LTD34 citations90

US4778966AOct 18, 1988

Device for displaying operation of knob

ALPS ELECTRIC CO LTD34 citations90

US4705348ANov 10, 1987

Optical switch

ALPS ELECTRIC CO LTD22 citations81

US4580871AApr 8, 1986

Rotary encoder

ALPS ELECTRIC CO LTD12 citations73

US4606223AAug 19, 1986

Device for detecting rotating speed of thin shape motor

ALPS ELECTRIC CO LTD4 citations61