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.:
Date of Patent:
Oct. 16, 1990
Filed:
Aug. 28, 1989
Gregory Witkowski, Greenpoint, NY (US);
Bamdad Bahar, New York, NY (US);
Irving M Wolbrom, Great Neck, NY (US);
Chromex Corp., Brooklyn, NY (US);
Abstract
A porous structure comprising a macroporous support and a microporous membrane adhered to the outside surface of the support. Each of the support and membrane may be formed of a synthetic polymer, the polymers of the support and membrane usually being different from each other. The structure is formed by placing the membrane and a quantity of heat-fusible particles in contact with each other, and subjecting the membrane and particles to heat and pressure to fuse the particles into a macroporous support. The melting point of the membrane material should be no lower than that of the particle material.