Integrity testable filtration unit using supported hydrophilic porous membranes

US6186341A · kind A · utility

Assignee

• Sartorius AG · DE

Inventors

• Peter Konstantin · Boulder, US
• Oscar-Werner Reif · Hannover, DE
• Jürgen Rupp · Munich, DE
• Peter Soelkner · Göttingen, DE

Key dates

• Filing date: May 22, 1998
• Grant date: Feb 13, 2001
• Expiry date: May 22, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D65/003
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The hydrophilicity of porous separation membranes is maintained by bonding the membranes to thermoplastic fiber substrates at least on their peripheries before the membrane peripheries are sealed in a thermoplastic resin. The membranes are capable of being integrity tested.