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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Chemically amplified positive photo resist composition and method f...
Patent number
7,358,028
Issue date
Apr 15, 2008
Tokyo Ohka Kogyo Co., Ltd.
Kenji Maruyama
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Positive photoresist composition
Patent number
6,964,838
Issue date
Nov 15, 2005
Tokyo Ohka Kogyo Co., Ltd.
Masaki Kurihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive photoresist composition
Patent number
6,869,742
Issue date
Mar 22, 2005
Tokyo Ohka Kogyo Co., Ltd.
Jyunichi Mizuta
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive photoresist composition and process for synthesizing polyp...
Patent number
6,620,978
Issue date
Sep 16, 2003
Tokyo Ohka Kogyo Co., Ltd.
Satoshi Shimatani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive photoresist composition and process and synthesizing polyp...
Patent number
6,492,085
Issue date
Dec 10, 2002
Tokyo Ohka Kogyo Co., Ltd.
Satoshi Shimatani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive photoresist composition and process for forming contact hole
Patent number
6,296,992
Issue date
Oct 2, 2001
Tokyo Ohka Kogyo Co., Ltd.
Masaki Kurihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive photoresist composition and process for forming contact hole
Patent number
6,207,340
Issue date
Mar 27, 2001
Tokyo Ohka Kogyo Co., Ltd.
Masaki Kurihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive photoresist composition and process for forming contact hole
Patent number
6,177,226
Issue date
Jan 23, 2001
Tokyo Ohka Kogyo Co., Ltd.
Masaki Kurihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Production process of polyphenol diesters, and positive photosensit...
Patent number
6,106,994
Issue date
Aug 22, 2000
Tokyo Ohka Kogyo Co., Ltd.
Satoshi Niikura
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Positive photoresist composition
Patent number
5,738,968
Issue date
Apr 14, 1998
Tokyo Ohka Kogyo Co., Ltd.
Hiroshi Hosoda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive photoresist compositions and multilayer resist materials u...
Patent number
5,728,504
Issue date
Mar 17, 1998
Tokyo Ohka Kogyo Co., Ltd.
Hiroshi Hosoda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive photoresist composition
Patent number
5,702,861
Issue date
Dec 30, 1997
Tokyo Ohka Kogyo Co., Ltd.
Satoshi Niikura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive-working quinonediazide photoresist composition containing...
Patent number
5,518,860
Issue date
May 21, 1996
Tokyo Ohka Kogyo Co., Ltd.
Satoshi Niikura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Alkali-developable positive-working photosensitive resin composition
Patent number
5,384,228
Issue date
Jan 24, 1995
Tokyo Ohka Kogyo Co., Ltd.
Kousuke Doi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Positive-working quinone diazide composition containing N,N',N"-sub...
Patent number
5,332,647
Issue date
Jul 26, 1994
Tokyo Ohka Kogyo Co., Ltd.
Hayato Ohno
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
CHEMICAL AMPLIFICATION TYPE POSITIVE PHOTORESIST COMPOSITION AND RE...
Publication number
20070117045
Publication date
May 24, 2007
Tokyo Ohka Kogyo Co., Ltd.
Kenji Maruyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Chemically amplified positive photo resist composition and method f...
Publication number
20050244740
Publication date
Nov 3, 2005
Kenji Maruyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Positive photoresist composition
Publication number
20040137359
Publication date
Jul 15, 2004
Tokyo Ohka Kogyo Co., Ltd.
Masaki Kurihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Positive photoresist composition and process for synthesizing polyp...
Publication number
20030054283
Publication date
Mar 20, 2003
Tokyo Ohka Kogyo Co., Ltd.
Satoshi Shimatani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Positive photoresist composition
Publication number
20020182531
Publication date
Dec 5, 2002
Tokyo Ohka Kogyo Co., Ltd.
Jyunichi Mizuta
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Positive photoresist composition
Publication number
20020132178
Publication date
Sep 19, 2002
Tokyo Ohka Kogyo Co., Ltd.
Masaki Kurihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY