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Masao Ushida
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Photomask blank and method of producing the same, method of produci...
Patent number
7,901,842
Issue date
Mar 8, 2011
Hoya Corporation
Takeyuki Yamada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Lithography mask blank
Patent number
7,781,125
Issue date
Aug 24, 2010
Hoya Corporation
Masao Ushida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Halftone type phase shift mask blank and halftone type phase shift...
Patent number
7,611,808
Issue date
Nov 3, 2009
Hoya Corporation
Masao Ushida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photomask blank
Patent number
D568839
Issue date
May 13, 2008
Hoya Corporation
Masaru Mitsui
D13 - Equipment for production, distribution, or transformation of energy
Information
Patent Grant
Photomask blank
Patent number
D543160
Issue date
May 22, 2007
Hoya Corporation
Masaru Mitsui
D13 - Equipment for production, distribution, or transformation of energy
Information
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
Halftone type phase shift mask blank and halftone type phase shift...
Patent number
7,166,392
Issue date
Jan 23, 2007
Hoya Corporation
Masao Ushida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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...
Information
Patent Grant
Photo-mask blank comprising a shading layer having a variable etch...
Patent number
4,696,877
Issue date
Sep 29, 1987
Hoya Corporation
Shigekazu Matsui
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photo-mask blank comprising a shading layer having a variable etch...
Patent number
4,563,407
Issue date
Jan 7, 1986
Hoya Corporation
Shigekazu Matsui
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
PHOTOMASK BLANK AND METHOD OF PRODUCING THE SAME, METHOD OF PRODUCI...
Publication number
20090233182
Publication date
Sep 17, 2009
HOYA CORPORATION
Takeyuki Yamada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Halftone type phase shift mask blank and halftone type phase shift...
Publication number
20070134568
Publication date
Jun 14, 2007
Hoya Corporation
Masao Ushida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Lithography mask blank
Publication number
20050250018
Publication date
Nov 10, 2005
Masao Ushida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
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...
Information
Patent Application
Halftone type phase shift mask blank and halftone type phase shift...
Publication number
20030219654
Publication date
Nov 27, 2003
Hoya Corporation
Masao Ushida
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY