Inventor
TSUJI NOBUAKI
JP43 patents
⚠️ This page may combine multiple inventors who share the name “TSUJI NOBUAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
YAMAHA CORP
28 patentsUS6791405B2Sep 14, 2004
Triangular wave generating circuit used in a Class-D amplifier
YAMAHA CORP44 citations93
US7315202B2Jan 1, 2008
Pulse-width modulation amplifier and suppression of clipping therefor
YAMAHA CORP24 citations92
US6826215B2Nov 30, 2004
Laser diode driving circuit
YAMAHA CORP23 citations91
US7948313B2May 24, 2011
Class D amplifier circuit
YAMAHA CORP14 citations84
US7679435B2Mar 16, 2010
Digital input class-D amplifier
YAMAHA CORP16 citations84
US7183818B2Feb 27, 2007
Triangular wave generating circuit adapted to class-D amplifier
YAMAHA CORP15 citations84
US6778011B2Aug 17, 2004
Pulse-width modulation circuit and power amplifier circuit
YAMAHA CORP17 citations84
US6608505B2Aug 19, 2003
Ouput buffer circuit
YAMAHA CORP19 citations84
US6448856B2Sep 10, 2002
Electronic volume circuit
YAMAHA CORP15 citations84
US6291835B1Sep 18, 2001
Semiconductor device
YAMAHA CORP15 citations84
US7924089B2Apr 12, 2011
Offset voltage correction circuit and class D amplifier
YAMAHA CORP7 citations83
US7920082B2Apr 5, 2011
D/A converter circuit and digital input class-D amplifier
YAMAHA CORP16 citations83
US7816992B2Oct 19, 2010
Offset voltage correction circuit and class D amplifier
YAMAHA CORP11 citations83
US5391920AFeb 21, 1995
Semiconductor device having peripheral metal wiring
YAMAHA CORP18 citations82
US5654571AAug 5, 1997
Semiconductor device
YAMAHA CORP8 citations74
US6847059B2Jan 25, 2005
Semiconductor input protection circuit
YAMAHA CORP8 citations71
US7298855B2Nov 20, 2007
Volume circuit using resistive ladder circuits
YAMAHA CORP7 citations66
US6384632B2May 7, 2002
Buffer circuit
YAMAHA CORP6 citations63
US7830182B2Nov 9, 2010
Comparator
YAMAHA CORP5 citations62
US12225361B2Feb 11, 2025
Sound signal processing device, sound system, and computer-implemented method
YAMAHA CORP0 citations60
US6894320B2May 17, 2005
Input protection circuit
YAMAHA CORP5 citations59
US5804857ASep 8, 1998
Semiconductor device with element window defined by closed loop conductor
YAMAHA CORP1 citations52
US7990211B2Aug 2, 2011
Class D amplifier circuit
YAMAHA CORP1 citations51
US7075123B2Jul 11, 2006
Semiconductor input protection circuit
YAMAHA CORP1 citations50
US6903577B2Jun 7, 2005
Delay circuit
YAMAHA CORP1 citations50
US6903607B2Jun 7, 2005
Operational amplifier
YAMAHA CORP1 citations50
US7982522B2Jul 19, 2011
Semiconductor integrated circuit for realizing an amplifier having ringing reduction circuitry
YAMAHA CORP0 citations42
US7912112B2Mar 22, 2011
Spectrum spreading circuit
YAMAHA CORP0 citations41
KONISHIROKU PHOTO IND
7 patentsUS5286619AFeb 15, 1994
Silver halide photographic light-sensitive material
KONISHIROKU PHOTO IND7 citations74
US5231656AJul 27, 1993
Device for detecting film information
KONISHIROKU PHOTO IND9 citations74
US4861702AAug 29, 1989
Rapidly processable silver halide photographic light-sensitive material and the processing thereof
KONISHIROKU PHOTO IND15 citations73
US4847189AJul 11, 1989
High speed processing silver halide photographic light-sensitive material
KONISHIROKU PHOTO IND11 citations73
US5554495ASep 10, 1996
Silver halide photographic light sensitive material containing antistatic layer
KONISHIROKU PHOTO IND2 citations63
US5591570AJan 7, 1997
Light-sensitive silver halide photographic emulsion, silver halide photographic light sensitive material and method for processing silver halide photographic light-sensitive material
KONISHIROKU PHOTO IND5 citations59
USH1547HJun 4, 1996
Silver halide photographic light-sensitive material for laser-beam-scanning use
KONISHIROKU PHOTO IND1 citations52