Patent · US Active

Double-layer hollow membrane for bio-reactor applications

US7485249B2 · kind B2 · utility

0Cited by

7References

11Claims

0Family size

Assignee

GKSS-Forschungszentrum Geesthacht GmbH · DE

Inventors

Wolfgang Albrecht · Berlin, DE
Dieter Paul · Neunkirchen, DE
Roland Hilke · Teltow, DE
Barbara Seifert · Berlin, DE
Thomas Weigel · Wilhelmshorst, DE
Thomas Groth · Merrill, US

Key dates

Filing date	Jan 16, 2004
Grant date	Feb 3, 2009
Priority date	—
Expiry date	Jul 9, 2026

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01D5/24
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

In a method of manufacturing a double-layer membrane of different polymers or polymer mixtures with opposite blood-compatible and tissue-compatible surfaces, a first polymer solution of a blood-compatible polymer and a second solution of a tissue-compatible polymer are extruded concurrently in layered form through a nozzle into a coagulation bath so as to form a double layer membrane.

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