Inventor
YAMAGATA MASATO
JP16 patents
⚠️ This page may combine multiple inventors who share the name “YAMAGATA MASATO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
10 patentsUS5237603AAug 17, 1993
Cordless telephone which intermittently monitors predetermined channels from all available channels
SONY CORP58 citations96
US4783844ANov 8, 1988
Apparatus for transmitting and recording signals
SONY CORP30 citations91
US4650931AMar 17, 1987
Cordless telephone
SONY CORP31 citations91
US5220594AJun 15, 1993
Cordless telephone system having a telephone answering machine function
SONY CORP26 citations90
US4768219AAug 30, 1988
Cordless telephone
SONY CORP47 citations90
US5926766AJul 20, 1999
Cordless telephone with division of channels into groups of channels
SONY CORP9 citations73
US5363430ANov 8, 1994
Cordless telephone apparatus having a low power stand-by mode and a hold mode
SONY CORP19 citations73
US5233644AAug 3, 1993
Cordless telephone with actuation of off-hook condition by operation of dial key
SONY CORP13 citations67
US6542603B1Apr 1, 2003
Telephone answering unit with caller ID and variable ring sounds
SONY CORP10 citations66
US6002939ADec 14, 1999
Apparatus and method for allocating channels in plural communication units
SONY CORP1 citations51