Compounds and method for preparing 3-methylcephams

United States of America Patent

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Jun 21, 2005
Grant Date
Jun 3, 2004
app pub date
Nov 12, 2003
filing date
Feb 16, 2000

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Expired

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Abstract

The present invention relates to novel intermediates for the preparation of 3-methylenecephams of the formula IIA. ##STR1##

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Patent Owner	Address
COOPER CONSULTING	6740 DOVER ROAD INDIANAPOLIS IN 46220

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C07D:HETEROCYCLIC COMPOUNDS

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Inventor Name	Address	# of filed Patents	Total Citations
Barrett, Anthony G M	London, GB	16	137
Cooper, Robin D G	Indianapolis, IN	20	144

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Compounds and method for preparing 3-methylcephams

Number of patents in Portfolio can not be more than 2000

United States of America Patent

10706683

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PATENT NO	6908996
APP PUB NO	20040106790A1
SERIAL NO	10706683
DOCKET NO

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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
June 21, 2005	US,6908996,B2 US6908996B2	GRANTED PATENT AS SECOND PUBLICATION
June 03, 2004	US,20040106790,A1 US20040106790A1	FIRST PUBLISHED PATENT APPLICATION

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10706683

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