Polyamic acid varnish composition and a flexible printed board

United States of America Patent

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Aug 29, 2006
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Feb 3, 2005
app pub date
Aug 31, 2004
filing date
Dec 17, 1999

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Abstract

A polyamic acid varnish composition, which is composed of a polyamic acid obtained by the addition polymerization of an diamine and an aromatic acid dianhydride, contains as an additive a specific imidazolyl-diaminoazine.

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Patent Owner(s)

Patent Owner	Address
SONY CHEMICALS CORP	GATE CITY OSAKI EAST TOWER 8F 1-11-2 OSAKI SHINAGAWA-KU TOKYO 141-0032

International Classification(s)

C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

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Inventor Name	Address	# of filed Patents	Total Citations
Kudo, Noriaki	Kanuma, JP	15	143
Nagashima, Minoru	Kanuma, JP	14	21

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Polyamic acid varnish composition and a flexible printed board

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United States of America Patent

10929416

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PATENT NO	7098267
APP PUB NO	20050027099A1
SERIAL NO	10929416
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
August 29, 2006	US,7098267,B2 US7098267B2	GRANTED PATENT AS SECOND PUBLICATION
February 03, 2005	US,20050027099,A1 US20050027099A1	FIRST PUBLISHED PATENT APPLICATION

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10929416

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