Production of bisphosphines

United States of America Patent

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Mar 29, 2011
Grant Date
Jan 21, 2010
app pub date
Jul 20, 2006
filing date
Jul 22, 2005

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Abstract

Bisphosphines are prepared by reacting a phosphine with a dihalide in the presence of an acid; characteristically, bisphosphonium compounds are initially formed and then converted into the bisphosphines.

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Patent Owner	Address
RHODIA UK LIMITED	WATFORD HERTFORDSHIRE WD24 4QP

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C01B:NON-METALLIC ELEMENTS; COMPOUNDS THEREOF

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Inventor Name	Address	# of filed Patents
Docherty, Gordon	Birmingham, GB	2
Good, Graham	Oldbury, GB	1
Jackson, Sheena	Birmingham, GB	1

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Production of bisphosphines

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United States of America Patent

11989113

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PATENT NO	7914759
APP PUB NO	20100015024A1
SERIAL NO	11989113
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
March 29, 2011	US,7914759,B2 US7914759B2	GRANTED PATENT AS SECOND PUBLICATION
January 21, 2010	US,20100015024,A1 US20100015024A1	FIRST PUBLISHED PATENT APPLICATION

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11989113

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