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Masatomo Shibui
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Management technique of friction coefficient based on surface rough...
Patent number
7,220,446
Issue date
May 22, 2007
Hoya Corporation
Tomotaka Yokoyama
G11 - INFORMATION STORAGE
Information
Patent Grant
Management technique of friction coefficient based on surface rough...
Patent number
6,706,427
Issue date
Mar 16, 2004
Hoya Corporation
Tomotaka Yokoyama
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
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Patent Application
Management technique of friction coefficient based on surface rough...
Publication number
20040170870
Publication date
Sep 2, 2004
Hoya Corporation
Tomotaka Yokoyama
B32 - LAYERED PRODUCTS
Information
Patent Application
Management technique of friction coefficient based on surface rough...
Publication number
20010053444
Publication date
Dec 20, 2001
Hoya Corporation
Tomotaka Yokoyama
B82 - NANO-TECHNOLOGY