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Seiji Muro
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Niihama-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
Projection screen having a plural number of light control layers
Patent number
7,586,680
Issue date
Sep 8, 2009
Sumitomo Chemical Company, Limited
Toyokazu Okada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
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Patent Application
Projection screen
Publication number
20050219692
Publication date
Oct 6, 2005
Sumitomo Chemical Company, Limited
Toyokazu Okada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY