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Haruhiko Yamagata
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Photomask blank, photomask, methods of manufacturing the same and m...
Patent number
7,217,481
Issue date
May 15, 2007
Hoya Corporation
Masaru Mitsui
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Photomask blank, photomask, methods of manufacturing the same, and...
Patent number
6,899,979
Issue date
May 31, 2005
Hoyo Corporation
Masaru Mitsui
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Patents Applications
last 30 patents
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Patent Application
Photomask blank, photomask, methods of manufacturing the same and m...
Publication number
20050142463
Publication date
Jun 30, 2005
HOYA CORPORATION
Masaru Mitsui
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...