Patent · US Expired

Integral supported separation membranes

US6293411A · kind A · utility

4Cited by

4References

6Claims

0Family size

Assignee

Sartorius AG · DE

Inventor

Hans Beer · Salzhemmendorf, DE

Key dates

Filing date	Sep 27, 1999
Grant date	Sep 25, 2001
Priority date	—
Expiry date	Sep 27, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D69/1071
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Supported separation membranes are disclosed wherein the permselective membrane is integral with a polymeric support of non-woven fibers having a particular air permeability, the integral membranes exhibiting far superior lifetimes and retention capability, especially for microorganisms.

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