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Joetsu-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
Photomask blank, photomask blank making method, and photomask makin...
Patent number
11,073,756
Issue date
Jul 27, 2021
Shin-Etsu Chemical Co., Ltd.
Takuro Kosaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photomask blank and making method
Patent number
11,061,319
Issue date
Jul 13, 2021
Shin-Etsu Chemical Co., Ltd.
Takuro Kosaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photomask blank, method for manufacturing photomask, and mask patte...
Patent number
10,585,345
Issue date
Mar 10, 2020
Shin-Etsu Chemical Co., Ltd.
Shigeo Irie
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
PHOTOMASK BLANK, PHOTOMASK BLANK MAKING METHOD, AND PHOTOMASK MAKIN...
Publication number
20190033703
Publication date
Jan 31, 2019
Shin-Etsu Chemical Co., Ltd.
Takuro KOSAKA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PHOTOMASK BLANK AND MAKING METHOD
Publication number
20180356721
Publication date
Dec 13, 2018
Shin-Etsu Chemical Co., Ltd.
Takuro KOSAKA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
PHOTOMASK BLANK, METHOD FOR MANUFACTURING PHOTOMASK, AND MASK PATTE...
Publication number
20180267398
Publication date
Sep 20, 2018
Shin-Etsu Chemical Co., Ltd.
Shigeo IRIE
H01 - BASIC ELECTRIC ELEMENTS