Inventor
AIZAWA HITOMI
JP14 patents
⚠️ This page may combine multiple inventors who share the name “AIZAWA HITOMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUWA SEIKOSHA KK
9 patentsUS4551029ANov 5, 1985
Electronic timepiece with a sound generator
SUWA SEIKOSHA KK9 citations73
US4508457AApr 2, 1985
Electronic timepiece with record/playback circuits
SUWA SEIKOSHA KK16 citations73
US4479065AOct 23, 1984
Chattering preventive circuit
SUWA SEIKOSHA KK7 citations73
US4417155ANov 22, 1983
Anti-chatter circuit for small portable apparatus
SUWA SEIKOSHA KK17 citations73
US4303995ADec 1, 1981
Electronic timepiece with calendar display arrangement
SUWA SEIKOSHA KK16 citations73
US4094136AJun 13, 1978
Electronic timepiece inspection circuit
SUWA SEIKOSHA KK7 citations73
US4378167AMar 29, 1983
Electronic timepiece with frequency correction
SUWA SEIKOSHA KK6 citations62
US4376992AMar 15, 1983
Electronic wristwatch with alarm function
SUWA SEIKOSHA KK6 citations62
US4349900ASep 14, 1982
Electronic timepiece with error compensation circuit
SUWA SEIKOSHA KK4 citations62
SEIKO EPSON CORP
5 patentsUS6519548B1Feb 11, 2003
Information processing device for diver
SEIKO EPSON CORP35 citations92
US5036276AJul 30, 1991
Magnetic encoder with high resolution of data signal recording at reduced recording pitch
SEIKO EPSON CORP29 citations92
US5548765AAug 20, 1996
Power saving display subsystem for portable computers
SEIKO EPSON CORP73 citations90
US4761771AAug 2, 1988
Electronic timekeeping apparatus with temperature compensation and method for compensating same
SEIKO EPSON CORP17 citations72
US4730286AMar 8, 1988
Circuit and method for correcting the rate of an electronic timepiece
SEIKO EPSON CORP6 citations62