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Hiroko Okura
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Kanagawa, JP
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last 30 patents
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Patent Grant
Optical recording medium and recording method
Patent number
6,770,346
Issue date
Aug 3, 2004
Ricoh Company, Ltd.
Makoto Harigaya
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
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Patent Application
Optical recording medium and recording method
Publication number
20030012917
Publication date
Jan 16, 2003
Ricoh Company, Ltd.
Makoto Harigaya
G11 - INFORMATION STORAGE
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Patent Application
Optical information recording medium, method of manufacturing the o...
Publication number
20020110063
Publication date
Aug 15, 2002
Katsuyuki Yamada
G11 - INFORMATION STORAGE