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Hitoshi Ootsuka
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Phase shift mask blank, photo mask blank and manufacturing apparatu...
Patent number
6,762,000
Issue date
Jul 13, 2004
Hoya Corporation
Osamu Nozawa
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Patents Applications
last 30 patents
Information
Patent Application
Phase shift mask blank, photo mask blank, and manufacturing apparat...
Publication number
20070034499
Publication date
Feb 15, 2007
Hoya Corporation
Osamu Nozawa
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Phase shift mask blank, photo mask blank, and manufacturing apparat...
Publication number
20040058254
Publication date
Mar 25, 2004
Hoya Corporation
Osamu Nozawa
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Phase shift mask blank, photo mask blank and manufacturing apparatu...
Publication number
20020110741
Publication date
Aug 15, 2002
Hoya Corporation
Osamu Nozawa
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...