Inventor
FUJISAWA MASANORI
JP43 patents
⚠️ This page may combine multiple inventors who share the name “FUJISAWA MASANORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ROHM CO LTD
37 patentsUS7688289B2Mar 30, 2010
Organic EL driver circuit and organic EL display device
ROHM CO LTD51 citations94
US6454172B1Sep 24, 2002
IC card having a display for displaying a response state
ROHM CO LTD21 citations93
US6992647B2Jan 31, 2006
Organic EL drive circuit and organic EL display device using the same
ROHM CO LTD22 citations92
US6756738B2Jun 29, 2004
Organic EL drive circuit and organic EL display device using the same
ROHM CO LTD33 citations92
US5508658AApr 16, 1996
Power amplifier circuit for audio signal and audio device using the same
ROHM CO LTD27 citations92
US5450036ASep 12, 1995
Power amplifier circuit for audio signal and audio device using the same
ROHM CO LTD44 citations92
US5483197AJan 9, 1996
Power amplifier circuit for audio signal and audio device using the same
ROHM CO LTD28 citations91
US5479134ADec 26, 1995
Power amplifier circuit for audio signal and audio device using the same
ROHM CO LTD29 citations91
US6747417B2Jun 8, 2004
Organic EL element drive circuit and organic EL display device
ROHM CO LTD40 citations87
US7456767B2Nov 25, 2008
D/A converter circuit, organic EL drive circuit, and organic EL display
ROHM CO LTD11 citations84
US7109966B2Sep 19, 2006
Display element drive circuit and display device
ROHM CO LTD14 citations84
US7109953B2Sep 19, 2006
Drive circuit of active matrix type organic EL panel and organic EL display device using the same drive circuit
ROHM CO LTD19 citations84
US6563376B2May 13, 2003
Mute circuit and digital audio amplifier circuit
ROHM CO LTD15 citations84
US6792121B2Sep 14, 2004
Audio signal amplifier circuit and portable telephone set and portable electronic device using the same audio signal amplifier circuit
ROHM CO LTD13 citations79
US7400097B2Jul 15, 2008
Organic EL display device
ROHM CO LTD8 citations74
US7084577B2Aug 1, 2006
Organic EL element drive circuit and organic EL display device using the same drive circuit
ROHM CO LTD10 citations74
US6967604B2Nov 22, 2005
D/A converter circuit, organic EL drive circuit and organic EL display device
ROHM CO LTD7 citations74
US6525649B1Feb 25, 2003
Non-contact communication system and interrogator used therefor
ROHM CO LTD9 citations74
US6025824AFeb 15, 2000
Piezoelectric transformer driving circuit and cold cathode tube illuminating device using the same
ROHM CO LTD10 citations74
US5787182AJul 28, 1998
Audio signal amplifier circuit and a portable audio equipment using the same
ROHM CO LTD15 citations74
US5770973AJun 23, 1998
Semiconductor device for amplifying audio signals
ROHM CO LTD16 citations74
US5812028ASep 22, 1998
Audio signal amplifier circuit and a portable acoustic apparatus using the same
ROHM CO LTD13 citations73
US5808458ASep 15, 1998
Regulated power supply circuit
ROHM CO LTD11 citations73
US7243311B2Jul 10, 2007
Method and apparatus for supporting development of integrated circuit and a transactional business method involving contracting and licensing
ROHM CO LTD9 citations70
US7876297B2Jan 25, 2011
Organic EL drive circuit with a D/A converter circuit and organic EL display device using the same
ROHM CO LTD3 citations63
US7471050B2Dec 30, 2008
Organic EL drive circuit and organic EL display device
ROHM CO LTD4 citations63
US7129916B2Oct 31, 2006
Organic EL element drive circuit and organic EL display device using the same drive circuit
ROHM CO LTD5 citations63
US7119769B2Oct 10, 2006
Active matrix type organic EL panel drive circuit and organic EL display device
ROHM CO LTD4 citations63
US7098905B2Aug 29, 2006
Active matrix type organic EL panel drive circuit and organic EL display device
ROHM CO LTD3 citations63
US7026766B2Apr 11, 2006
Organic EL element drive circuit and organic EL display device
ROHM CO LTD2 citations63
US7586469B2Sep 8, 2009
Organic EL drive circuit and organic EL display device using the same organic EL drive circuit
ROHM CO LTD2 citations62
US7446737B2Nov 4, 2008
Organic EL panel driving circuit, organic EL display device and organic EL panel driving circuit inspecting device
ROHM CO LTD4 citations62
US5424684AJun 13, 1995
Power amplifier circuit for audio signal and audio device using the same
ROHM CO LTD6 citations62
US7030841B2Apr 18, 2006
Organic EL element drive circuit and organic EL display device using the same
ROHM CO LTD5 citations57
US6266425B1Jul 24, 2001
Audio amplifier circuit and audio device using the circuit
ROHM CO LTD6 citations54
US7372439B2May 13, 2008
Reference current generator circuit of organic EL drive circuit, organic EL drive circuit and organic EL display device
ROHM CO LTD0 citations41
US7002303B2Feb 21, 2006
Organic EL panel drive circuit and organic EL display device using the same drive circuit
ROHM CO LTD0 citations41
SANYO ELECTRIC CO
6 patentsUS5196807AMar 23, 1993
Amplifying circuit
SANYO ELECTRIC CO11 citations74
US5140281AAug 18, 1992
Amplifier circuit
SANYO ELECTRIC CO9 citations74
US5087890AFeb 11, 1992
Amplifier circuit
SANYO ELECTRIC CO9 citations74
US4801889AJan 31, 1989
Amplifier for amplifying input signal voltage and supplying the same
SANYO ELECTRIC CO11 citations74
US5325440AJun 28, 1994
Loudness control circuit
SANYO ELECTRIC CO6 citations63
US5160897ANov 3, 1992
Push-pull power amplifying circuit
SANYO ELECTRIC CO1 citations51