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Patents Grants
last 30 patents
Information
Patent Grant
Multilayered body for photolithographic patterning
Patent number
7,033,731
Issue date
Apr 25, 2006
Tokyo Ohka Kogyo Co., Ltd.
Toshikazu Tachikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Negative-working photoresist composition
Patent number
6,864,036
Issue date
Mar 8, 2005
Tokyo Ohka Kogyo Co., Ltd.
Toshikazu Tachikawa
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Positive resist composition and base material carrying layer of the...
Patent number
6,787,284
Issue date
Sep 7, 2004
Tokyo Ohka Kogyo Co., Ltd.
Toshiyuki Ogata
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Multilayered body for photolithographic patterning
Patent number
6,455,228
Issue date
Sep 24, 2002
Tokyo Ohka Kogyo Co., Ltd.
Toshikazu Tachikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Negative-working photoresist composition
Patent number
6,406,829
Issue date
Jun 18, 2002
Tokyo Ohka Kogyo Co., Ltd.
Toshikazu Tachikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
Fluorinated polymers, photoresists and processes for microlithography
Publication number
20050203262
Publication date
Sep 15, 2005
Andrew Edward Feiring
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Positive resist composition and base material carrying layer of the...
Publication number
20050123854
Publication date
Jun 9, 2005
Tokyo Ohka Kogyo Co., Ltd.
Toshiyuki Ogata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Multilayered body for photolithographic patterning
Publication number
20050008972
Publication date
Jan 13, 2005
Toshikazu Tachikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Positive resist composition and base material carrying layer of the...
Publication number
20040152860
Publication date
Aug 5, 2004
Tokyo Ohka Kogyo Co., Ltd.
Toshiyuki Ogata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Multilayered body for photolithographic patterning
Publication number
20020146645
Publication date
Oct 10, 2002
Toshikazu Tachikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Negative-working photoresist composition
Publication number
20020061467
Publication date
May 23, 2002
Toshikazu Tachikawa
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Application
Positive resist composition and base material carrying layer of the...
Publication number
20020025495
Publication date
Feb 28, 2002
Tokyo Ohka Kogyo Co., Ltd.
Toshiyuki Ogata
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC