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. 30, 1991
Filed:
May. 10, 1990
Applicant:
Inventors:
Paritosh M Chakrabarti, Pittsburgh, PA (US);
Harlan B Johnson, Rittman, OH (US);
Malcolm Korach, Akron, OH (US);
Dennis D Leatherman, Pittsburgh, PA (US);
Robert R Simmons, Norton, OH (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
424 78 ; 424 83 ; 424401 ; 424484 ; 424486 ; 521 61 ; 521 62 ; 521 64 ; 514963 ; 512-4 ;
Abstract
An active agent delivery device comprises (a) microporous material comprising a matrix consisting essentially of linear ultrahigh molecular weight polyolefin, a large proportion of finely divided water-insoluble filler of which at least about 50 percent by weight is siliceous, and interconnecting pores; and (b) a releasable active agent or precursor thereof associated with at least a portion of the filler.