Patent · US Expired

Liquid filtration process

US4289627A · kind A · utility

4Cited by

7References

4Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Dieter Disselbeck · Bad Soden, DE
Gerhard Neumann · Waldkraiburg, DE
Karl-Heinz Ott
Gunther Strobel · Hofheim, DE
Edwin Zalewski · Hofheim, DE

Key dates

Filing date	Aug 30, 1979
Grant date	Sep 15, 1981
Priority date	—
Expiry date	Aug 30, 1999

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD10B2505/04
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A three dimensional filter element of a porous fabric of synthetic fibers wherein the individual threads are bound to each other as to be unshiftable, said fabric having an air permeability of more than 50 l/dm.sup.2 . min at a pressure difference of 2 millibar and resisting to a permanent load over the entire filter area without the formation of free regions and a method for the separation of solid material from a liquid phase by means of the three-dimensional filter element preferably by gravity.

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