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:
Jul. 28, 1992
Filed:
Nov. 17, 1989
Thomas C Gsell, Glen Cove, NY (US);
Isaac Rothman, Brooklyn, NY (US);
Paul C Smith, III, Lindenhurst, NY (US);
Jeffrey K Chambers, Huntington, NY (US);
Pall Corporation, Glen Cove, NY (US);
Abstract
A filter medium is provided comprising a fibrous matrix to whose surfaces is grafted a superstrate comprising a polymer with quaternary ammonium groups and made from an ethylenically unsaturated monomer containing a quaternary ammonium or amino group, the filter medium having a positive zeta potential at pH 7 and preferably an enhanced Latex Adsorption Capacity together with low extractables and quick rinse-up.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile