Diamine and acid anhydride

United States of America Patent

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Feb 10, 2004
Grant Date
Feb 14, 2002
app pub date
Aug 17, 2001
filing date
Apr 1, 1998

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Expired

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Abstract

The present invention provides a novel diamine and a novel acid anhydride which are applicable for a polyimide and includes a cinnamoyl group or a derived cinnamoyl group. The novel diamines and acid anhydrides have photo-reactivity and heat-reactivity inherent to the cinnamoyl group.

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Patent Owner(s)

KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA

International Classification(s)

C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS

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[Patents Count]

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Inventor Name	Address	# of filed Patents	Total Citations
Nojiri, Hitoshi	Otsu, JP	24	311
Okada, Kohji	Otsu, JP	14	177

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Diamine and acid anhydride

Number of patents in Portfolio can not be more than 2000

United States of America Patent

09931248

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PATENT NO	6689899
APP PUB NO	20020019558A1
SERIAL NO	09931248
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
February 10, 2004	US,6689899,B2 US6689899B2	GRANTED PATENT AS SECOND PUBLICATION
February 14, 2002	US,20020019558,A1 US20020019558A1	FIRST PUBLISHED PATENT APPLICATION

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09931248

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