Inventor
SHIMOJIMA YOJI
JP12 patents
⚠️ This page may combine multiple inventors who share the name “SHIMOJIMA YOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALPS ELECTRIC CO LTD
11 patentsUS4806751AFeb 21, 1989
Code wheel for a reflective type optical rotary encoder
ALPS ELECTRIC CO LTD167 citations98
US4684210AAug 4, 1987
Light transmission device
ALPS ELECTRIC CO LTD58 citations95
US4725723AFeb 16, 1988
Optical rotary encoder with light monitoring and control
ALPS ELECTRIC CO LTD22 citations81
US4705348ANov 10, 1987
Optical switch
ALPS ELECTRIC CO LTD22 citations81
US4650995AMar 17, 1987
Reflection type optical rotary encoder
ALPS ELECTRIC CO LTD21 citations81
US4727356AFeb 23, 1988
Optical rotary encoder
ALPS ELECTRIC CO LTD14 citations73
US4580871AApr 8, 1986
Rotary encoder
ALPS ELECTRIC CO LTD12 citations73
US4580130AApr 1, 1986
Rotary encoder
ALPS ELECTRIC CO LTD11 citations73
US4634862AJan 6, 1987
Method of fabricating rotor of optical rotary encoder
ALPS ELECTRIC CO LTD2 citations62
US4617460AOct 14, 1986
Optical fiber sensor having shaped ends
ALPS ELECTRIC CO LTD4 citations62
US4606223AAug 19, 1986
Device for detecting rotating speed of thin shape motor
ALPS ELECTRIC CO LTD4 citations61