Patent · US Expired

Hollow fiber membranes

US5698101A · kind A · utility

20Cited by

2References

8Claims

0Family size

Assignee

Memtec LLC · AU

Inventors

Clinton V. Kopp · Bismarck, US
Robert J. W. Streeton · Richmond, AU
Paul Soo-Hock KHOO · Parramatta, AU

Key dates

Filing date	Jan 26, 1995
Grant date	Dec 16, 1997
Priority date	—
Expiry date	Jan 26, 2015

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2323/22
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A hollow fiber membrane is produced having an outer surface, and inner surface enclosing a lumen, and a continuous network of interconnecting pores extending from the outer surface to the inner surface, wherein substantially all of the pores have an elongated dimension and a shortened dimension, the elongated dimension being oriented substantially parallel to the axis of the hollow fiber, wherein the ratio of the elongated dimension to the shortened dimension is substantially constant from the outer surface to the inner surface, and wherein the pores change shape to increase the shortened dimension in response to a high pressure differential imposed across the membrane by increasing fluid pressure within the lumen.

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