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Yoshio Nishioka
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Hadano-shi, JP
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last 30 patents
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Patent Grant
Computer with keyboard illuminator for use in operating environment...
Patent number
6,561,668
Issue date
May 13, 2003
International Business Machines Corporation
Ken Katayama
F21 - LIGHTING
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last 30 patents
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Patent Application
Computer with illuminator for keyboard, and portable computer with...
Publication number
20020085371
Publication date
Jul 4, 2002
Ken Katayama
G06 - COMPUTING CALCULATING COUNTING