The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6824680 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 30, 2004

Filed:

May. 07, 2001
Applicant:
Inventors:

Chaiya Chandavasu, Bangna, TH;

Marino Xanthos, Fort Lee, NJ (US);

Kamalesh K. Sirkar, Bridgewater, NJ (US);

Costas Gogos, Wyckoff, NJ (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 7/106 ;
U.S. Cl.
CPC ...
B01D 7/106 ;
Abstract

The invention is directed broadly to microporous films prepared from immiscible blends of at least two components, preferably polymers, which are produced via melt processing, a film formed therefrom, for example by extrusion and post-film-forming treatments comprising uniaxial or biaxial cold-stretching and hot-stretching. The films have a three-dimensional reticulated or interconnected network of microcracks or crazing throughout the film, extending from one surface of the film to the other, providing a stable porosity and pore size useful for a variety of filtration and other applications.


Find Patent Forward Citations

Chandavasu, Chaiya. (2004). Preparation of microporous films from immiscible blends via melt processing and stretching (U.S. Patent No. 6824680). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6824680

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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