Filtering particulate cellulosic-based material

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United States of America Patent

PATENT NO 5421525
SERIAL NO

08283148

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Abstract

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A method is provided for filtering shredded cellulose-based material, for example to enable the formation of a mixture containing cellulose dispersed in a solvent for cellulose such as amine oxide. The shredding operation creates both fine particles of cellulosic material ('pulp dust') and large particles of cellulosic material, The shredded cellulosic material is passed through a separator to separate the pulp dust from the large particles of cellulosic material and the pulp dust is subsequently recovered in a filtering process.

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Patent Owner(s)

Patent OwnerAddress
COURTAULDS FIBRES (HOLDINGS) LIMITED50 GEORGE STREET LONDON W1A 2BB

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gray, Gary E G Coventry, GB 8 84
Pennicott, Philip Stockport, GB 2 32

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