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Photomask blank
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Patent number D568839
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Issue date May 13, 2008
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Hoya Corporation
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Masaru Mitsui
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D13 - Equipment for production, distribution, or transformation of energy
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Photomask blank
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Patent number D543160
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Issue date May 22, 2007
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Hoya Corporation
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Masaru Mitsui
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D13 - Equipment for production, distribution, or transformation of energy
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Photomask blank
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Patent number D537048
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Issue date Feb 20, 2007
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Hoya Corporation
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Masaru Mitsui
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D13 - Equipment for production, distribution, or transformation of energy
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Photomask blank manufacturing method
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Patent number 7,026,077
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Issue date Apr 11, 2006
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Hoya Corporation
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Masaru Mitsui
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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