Patent · US Expired

Use of a microporous membrane constructed of polyether sulfon and hydrophilization agent for the filtration of beer

US4943374A · kind A · utility

33Cited by

3References

43Claims

0Family size

Assignee

Gessner Holding AG · DE

Inventors

Hans-Ulrich Heininger · Aschau, DE
Wilhelm Munninger · Rosenheim, DE
Ernst Pawlowsky · Wetzlar, DE

Key dates

Filing date	Apr 25, 1988
Grant date	Jul 24, 1990
Priority date	—
Expiry date	Apr 25, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC12H1/063
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention concerns the use of a microporous membrane constructed of polyether sulfon and a hydrophilization agent having a pore size which is within the range of between 0.1 and 1.2 microns for the filtration of beer. This membrane filter proves to be particularly suitable for the microbiological stabilization of the beer and for the separation of the turbid substances. The membrane makes it possible to remove the germs which are harmful to the beer and the harmful turbid substances and to simultaneously filter the beer with a high throughput and therefore economically and with low costs.

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