Ion exchangers

United States of America Patent

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Jun 28, 2005
Grant Date
Jul 10, 2003
app pub date
Dec 8, 2000
filing date
Dec 8, 1999

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Expired

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Abstract

The present invention is related to a new quaternary amino (QA) anion exchanger comprising QA derivatized, hydroxy (C2-C4) alkylated and cross-linked regenerated cellulose, in which the level of derivitization with the QA-groups is 1.4 milli-equivalents per dry gram (meq/g) or greater.

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Patent Owner(s)

Patent Owner	Address
MASSEY UNIVERSITY	TENNENT DRIVE PALMERSTON NORTH

International Classification(s)

C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....

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Inventor Name	Address	# of filed Patents	Total Citations
Ayers, John Stephen	Palmerston North, NZ	5	25
Egan, Margaret Mary Agnes	Tauranga, NZ	1	3
Elgar, David Francis	Palmerston, NZ	8	29

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Ion exchangers

Number of patents in Portfolio can not be more than 2000

United States of America Patent

10149332

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PATENT NO	6911483
APP PUB NO	20030129719A1
SERIAL NO	10149332
DOCKET NO

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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
June 28, 2005	US,6911483,B2 US6911483B2	GRANTED PATENT AS SECOND PUBLICATION
July 10, 2003	US,20030129719,A1 US20030129719A1	FIRST PUBLISHED PATENT APPLICATION

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10149332

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