Inventor
HATUSE TOSHIKAZU
JP10 patents
⚠️ This page may combine multiple inventors who share the name “HATUSE TOSHIKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CITIZEN WATCH CO LTD
8 patentsUS4257115AMar 17, 1981
Switch structure for electronic timepiece
CITIZEN WATCH CO LTD72 citations94
US4255801AMar 10, 1981
Electronic watch
CITIZEN WATCH CO LTD48 citations90
US4271493AJun 2, 1981
Electronic timepiece
CITIZEN WATCH CO LTD28 citations81
US4268913AMay 19, 1981
Electronic calculator watch
CITIZEN WATCH CO LTD22 citations80
US4149257AApr 10, 1979
Alarm watch equipped with electronic calculator
CITIZEN WATCH CO LTD15 citations70
US4150365AApr 17, 1979
Driver circuit for electrochromic display device
CITIZEN WATCH CO LTD6 citations62
US4060974ADec 6, 1977
Method and apparatus for driving electrochromic display device
CITIZEN WATCH CO LTD4 citations61
US4210798AJul 1, 1980
Device for detachably mounting glass on timepiece cases
CITIZEN WATCH CO LTD3 citations60