Patent · US Active

Cross-flow filter cassette

US7520988B2 · kind B2 · utility

3Cited by

3References

7Claims

0Family size

Assignee

Sartorius Stedim Biotech GmbH · DE

Inventors

Ina Pahl · Hannover, DE
Hans-Weddo Schmidt · Hardegsen, DE
Ulrich Grummert · Witzenhausen, DE

Key dates

Filing date	Nov 20, 2006
Grant date	Apr 21, 2009
Priority date	—
Expiry date	Nov 29, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02A20/131
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An improved cross-flow filtration unit utilizing at least one two-ply membrane is disclosed that has a particular pore size relationship in the two membrane layers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.