Inventor
TOTSUKA KEIICHI
24 patents
⚠️ This page may combine multiple inventors who share the name “TOTSUKA KEIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
18 patentsUS7181024B1Feb 20, 2007
Portable audio listening apparatus
SONY CORP66 citations98
US7202773B1Apr 10, 2007
Authentication information communication system and method, portable information processing device and program furnishing medium
SONY CORP319 citations97
US6282713B1Aug 28, 2001
Method and apparatus for providing on-demand electronic advertising
SONY CORP754 citations96
USD342947SJan 4, 1994
Radio tuner
SONY CORP73 citations96
US6262763B1Jul 17, 2001
Actual size image display
SONY CORP71 citations95
USD392976SMar 31, 1998
Combined loudspeaker and stand with subwoofer
SONY CORP28 citations92
USD707744SJun 24, 2014
Portable digital camera
SONY CORP8 citations84
USD695330SDec 10, 2013
Portable digital camera
SONY CORP8 citations84
USD327269SJun 23, 1992
Radio receiver
SONY CORP18 citations82
USD400201SOct 27, 1998
Television receiver
SONY CORP12 citations74
USD392973SMar 31, 1998
Combined loudspeaker and stand
SONY CORP11 citations74
USD392974SMar 31, 1998
Subwoofer loudspeaker
SONY CORP14 citations74
USD342520SDec 21, 1993
Combined radio tuner and clock
SONY CORP14 citations74
USD321513SNov 12, 1991
Combined tape player and radio tuner
SONY CORP13 citations74
US6222809B1Apr 24, 2001
Compact disc player with lid for displaying compact disc jacket art
SONY CORP4 citations63
USD399845SOct 20, 1998
Loudspeaker with removable grille cloth
SONY CORP2 citations63
US7225457B2May 29, 2007
Information supply apparatus, information utilization apparatus, information manipulation apparatus, information supply system, information supply method, information utilization method and recording medium
SONY CORP0 citations46
USD308202SMay 29, 1990
Television receiver
SONY CORP0 citations45