Patent · US Expired

Method for treating polymeric fiber mats and for making filters from such treated fiber mats

US6610242B1 · kind B1 · utility

0Cited by

8References

6Claims

0Family size

Inventors

Malcolm L. Swanson · Chickamauga, US
Ken L. Parris · Ooltewah, US
Winston F. Budrow · Phoenix, US
Alan Smithies · Overland Park, US

Key dates

Filing date	May 14, 2001
Grant date	Aug 26, 2003
Priority date	—
Expiry date	Aug 3, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D39/1623
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A mat of polymeric fibers is treated to alter a filtration surface by the application of heat and pressure. The filtration surface is heated to a temperature sufficient to soften the fibers and pressure is applied to compact the softened fibers in order to reduce the average pore size on or at the filtration surface.

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