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Mitsuyoshi Kawaguchi
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Disc cartridge including an inner shell formed by severing a molded...
Patent number
RE43454
Issue date
Jun 5, 2012
Sony Corporation
Yuji Iwaki
720 - Dynamic optical information storage or retrieval
Information
Patent Grant
Disk cartridge and disk recording medium device having shutter members
Patent number
7,284,254
Issue date
Oct 16, 2007
Sony Corporation
Manabu Obata
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk-drive device
Patent number
7,231,646
Issue date
Jun 12, 2007
Sony Corporation
Mitsuyoshi Kawaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Disc cartridge including an inner shell formed by severing a molded...
Patent number
7,127,732
Issue date
Oct 24, 2006
Sony Corporation
Yuji Iwaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Disc cartridge with crank-shaped dust intrusion prohibiting unit
Patent number
7,103,900
Issue date
Sep 5, 2006
Sony Corporation
Yuji Iwaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for producing inner shell for a disc cartridge
Patent number
7,103,898
Issue date
Sep 5, 2006
Sony Corporation
Yuji Iwaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk cartridge having a dust-proof shutter
Patent number
7,057,854
Issue date
Jun 6, 2006
Sony Corporation
Manabu Obata
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk cartridge with inner shell supported for rotation in guide gro...
Patent number
7,017,170
Issue date
Mar 21, 2006
Sony Corporation
Yuji Iwaki
G11 - INFORMATION STORAGE
Information
Patent Grant
Disc cartridge with shutter overlapping gap having labyrinth shaped...
Patent number
6,944,875
Issue date
Sep 13, 2005
Sony Corporation
Mitsuyoshi Kawaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Video tape recorder
Patent number
6,285,820
Issue date
Sep 4, 2001
Sony Corporation
Mitsuyoshi Kawaguchi
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
Disk drive device
Publication number
20050229194
Publication date
Oct 13, 2005
Mitsuyoshi Kawaguchi
G11 - INFORMATION STORAGE
Information
Patent Application
Disc cartridge, molding member for disc cartridge and method for pr...
Publication number
20050160447
Publication date
Jul 21, 2005
Sony Corporation
Yuji Iwaki
G11 - INFORMATION STORAGE
Information
Patent Application
Disc cartridge, molding member for disc cartridge and method for pr...
Publication number
20050149963
Publication date
Jul 7, 2005
Sony Corporation
Yuji Iwaki
G11 - INFORMATION STORAGE
Information
Patent Application
Disc cartridge, molding member for disc cartridge and method for pr...
Publication number
20050132396
Publication date
Jun 16, 2005
Sony Corporation
Yuji Iwaki
G11 - INFORMATION STORAGE
Information
Patent Application
Disk cartridge, disk recording medium apparatus and disk recording...
Publication number
20040233797
Publication date
Nov 25, 2004
Manabu Obata
G11 - INFORMATION STORAGE
Information
Patent Application
Cartridge
Publication number
20040163100
Publication date
Aug 19, 2004
Mitsuyoshi Kawaguchi
G11 - INFORMATION STORAGE
Information
Patent Application
Disk cartridge, disk recording medium device, and disk recording an...
Publication number
20040042277
Publication date
Mar 4, 2004
Manabu Obata
G11 - INFORMATION STORAGE
Information
Patent Application
Disk cartridge forming member for disk cartridge, and method of man...
Publication number
20030174640
Publication date
Sep 18, 2003
Yuji Iwaki
G11 - INFORMATION STORAGE