Masashi Ohtsuki

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for cleaning photo mask
- Patent number 7,718,008
- Issue date May 18, 2010
- Dai Nippon Printing Co., Ltd.
- Shu Shimada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Halftone phase shift photomask and blank for halftone phase shift p...
- Patent number 6,869,736
- Issue date Mar 22, 2005
- Dai Nippon Printing Co., Ltd.
- Hiro-o Nakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Halftone phase shift photomask and blank for halftone phase shift p...
- Patent number 6,599,667
- Issue date Jul 29, 2003
- Dai Nippon Printing Co., Ltd.
- Satoshi Yusa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Blank for halftone phase shift photomask and halftone phase shift p...
- Patent number 6,458,496
- Issue date Oct 1, 2002
- Dai Nippon Printing Co., Ltd.
- Toshiaki Motonaga
- B32 - LAYERED PRODUCTS

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR CLEANING PHOTO MASK
- Publication number 20080251100
- Publication date Oct 16, 2008
- Shu SHIMADA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Halftone phase shift photomask and blank for halftone phase shift p...
- Publication number 20030186135
- Publication date Oct 2, 2003
- Hiro-o Nakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Halftone phase shift photomask and blank for halftone phase shift p...
- Publication number 20020039689
- Publication date Apr 4, 2002
- Satoshi Yusa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Blank for halftone phase shift photomask and halftone phase shift p...
- Publication number 20010005564
- Publication date Jun 28, 2001
- Toshiaki Motonaga
- B32 - LAYERED PRODUCTS