Tanning leather

United States of America Patent

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Apr 1, 2003
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Jan 2, 2003
app pub date
Apr 14, 2000
filing date
Oct 30, 1997

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Abstract

Leather is tanned by cross-linking collagen with tris(hydroxymethyl)phosphine or a condensate of a tetrakis(hydroxymethyl)phosphonium salt with an amide or amine in a main tannage or retannage.

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Patent Owner(s)

Patent Owner	Address
RHODIA CONSUMER SPECIALITIES LIMITED	210-222 HAGLEY ROAD WEST P O BOX 3 OLDBURY WEST MIDLANDS B68 ONN

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Inventor Name	Address	# of filed Patents	Total Citations
Collins, Gareth Rhys	West Midlands, GB	2	2
Jones, Christopher Raymond	West Midlands, GB	24	88
Talbot, Robert Eric	Staffordshire, GB	15	77
Williams, Jane	Leicester, GB	4	103
Zakikhani, Mohsen	Birmingham, GB	12	89

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Tanning leather

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United States of America Patent

09529610

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PATENT NO	6540790
APP PUB NO	20030000024A1
SERIAL NO	09529610
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
April 01, 2003	US,6540790,B2 US6540790B2	GRANTED PATENT AS SECOND PUBLICATION
January 02, 2003	US,20030000024,A1 US20030000024A1	FIRST PUBLISHED PATENT APPLICATION

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09529610

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