Inventor
KAWAMURA YOSHIKAZU
16 patents
⚠️ This page may combine multiple inventors who share the name “KAWAMURA YOSHIKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUWA SEIKOSHA KK
12 patentsUS4105902AAug 8, 1978
Touch sensitive input for electronic wristwatch and/or electronic calculator
SUWA SEIKOSHA KK36 citations90
US4093992AJun 6, 1978
Electronic wristwatch
SUWA SEIKOSHA KK39 citations90
US4103191AJul 25, 1978
Step motor
SUWA SEIKOSHA KK28 citations82
US4212156AJul 15, 1980
Step motor control mechanism for electronic timepiece
SUWA SEIKOSHA KK22 citations81
US3978654ASep 7, 1976
Motion transformer
SUWA SEIKOSHA KK20 citations80
US3991332ANov 9, 1976
Stepping motor
SUWA SEIKOSHA KK17 citations74
US4370065AJan 25, 1983
Step motor control mechanism for electronic timepiece
SUWA SEIKOSHA KK7 citations73
US4262353AApr 14, 1981
Transducer for electronic timepiece
SUWA SEIKOSHA KK14 citations73
US4192131AMar 11, 1980
Step motor control mechanism for electronic timepiece
SUWA SEIKOSHA KK17 citations73
US3961213AJun 1, 1976
Motion transformer
SUWA SEIKOSHA KK12 citations72
US4522507AJun 11, 1985
Step motor control mechanism for electronic timepiece
SUWA SEIKOSHA KK1 citations62
US4227135AOct 7, 1980
Step motor driving circuit
SUWA SEIKOSHA KK1 citations51
SEIKO EPSON CORP
3 patentsUS5038329AAug 6, 1991
Step motor control mechanism for electronic timepiece
SEIKO EPSON CORP5 citations73
US4715725ADec 29, 1987
Step motor control mechanism for electronic timepiece
SEIKO EPSON CORP4 citations73
US4599005AJul 8, 1986
Step motor control mechanism for electronic timepiece
SEIKO EPSON CORP6 citations73