Inventor
CHIHARA HIROYUKI
JP18 patents
⚠️ This page may combine multiple inventors who share the name “CHIHARA HIROYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUWA SEIKOSHA KK
10 patentsUS4041691AAug 16, 1977
Electronic timepiece battery monitoring circuit
SUWA SEIKOSHA KK30 citations82
US3949545AApr 13, 1976
Quartz crystal timepiece
SUWA SEIKOSHA KK24 citations82
US4051663AOct 4, 1977
Electronic timepiece
SUWA SEIKOSHA KK23 citations80
US4395138AJul 26, 1983
Electronic timepiece
SUWA SEIKOSHA KK12 citations73
US4196432AApr 1, 1980
AC driving mode and circuit for an electro-optical display
SUWA SEIKOSHA KK18 citations73
US4043110AAug 23, 1977
Electronic timepiece battery-potential detecting circuit
SUWA SEIKOSHA KK7 citations73
US4037399AJul 26, 1977
Electronic timepiece battery potential detecting circuitry
SUWA SEIKOSHA KK9 citations73
US4232383ANov 4, 1980
Electronic timepiece battery monitoring circuit
SUWA SEIKOSHA KK3 citations62
US4182108AJan 8, 1980
Electronic timepiece correction circuit
SUWA SEIKOSHA KK5 citations62
US4435089AMar 6, 1984
Power circuit for an electronic timepiece
SUWA SEIKOSHA KK1 citations49
SEIKO EPSON CORP
6 patentsUS6714233B2Mar 30, 2004
Mobile video telephone system
SEIKO EPSON CORP158 citations99
US7016707B2Mar 21, 2006
Mobile telephone and radio communication device cooperatively processing incoming call
SEIKO EPSON CORP113 citations96
US7187908B2Mar 6, 2007
Wrist-watch device having communication function, information display method, control program, and recording medium
SEIKO EPSON CORP22 citations92
US7181179B2Feb 20, 2007
Hand-held electronic device
SEIKO EPSON CORP36 citations92
US4646157AFeb 24, 1987
Pocket television receivers
SEIKO EPSON CORP17 citations73
US7149502B2Dec 12, 2006
Wireless information distribution system, wireless information distribution device, and mobile wireless device
SEIKO EPSON CORP6 citations63