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:
Feb. 01, 1994
Filed:
May. 11, 1993
Applicant:
Inventors:
Peter J Degen, Huntington, NY (US);
Joseph Lee, South Setauket, NY (US);
Assignee:
Pall Corporation, East Hills, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
210645 ; 210654 ; 21032175 ; 21032184 ; 21050037 ; 21050042 ;
Abstract
A filter medium comprising a microporous polyvinylidene fluoride membrane and a polymer containing positively charged quaternary ammonium groups covalently bonded to the membrane, and a method of using the filter medium to treat a composition, particularly a biological or pharmaceutical composition such as an ophthalmic composition.
Degen, Peter. (1994). Positively charged polyvinylidene fluoride membrane (U.S. Patent No. 5282971). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5282971
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile