Multistep final filtration

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United States of America Patent

PATENT NO 11891430
APP PUB NO 20200291097A1
SERIAL NO

16660635

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Abstract

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Herein is reported a method for the final filtration of concentrated polypeptide solutions comprising the combination of two immediately consecutive filtration steps with a first filter of 3.0 μm and 0.8 μm pore size and a second filter of 0.45 μm and 0.22 μm pore size.

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Patent Owner(s)

  • HOFFMANN-LA ROCHE, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Falkenstein, Roberto Munich, DE 60 113
Schwendner, Klaus Weilheim, DE 11 3

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