Patent · US Expired

Filter assembly for vacuum filtration

US6623631B1 · kind B1 · utility

38Cited by

9References

10Claims

0Family size

Assignee

Sartorius AG · DE

Inventors

Andreas Graus · Nörten-Hardenberg, DE
Christian Schäfer · Berlin, DE

Key dates

Filing date	Jul 26, 2001
Grant date	Sep 23, 2003
Priority date	—
Expiry date	Jul 26, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/291
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

There is disclosed a vacuum filtration device for aqueous media that includes a hydrophilic tubular filter element in a cylindrical housing and at least one hydrophobic gas-permeable membrane, coupled with a gas bleed-off valve to allow the escape of air entrained in the filtration medium.

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