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:
Dec. 19, 1989
Filed:
Dec. 21, 1987
Applicant:
Inventors:
Yunik Chang, Lakewood, NJ (US);
Dinesh C Patel, Murray, UT (US);
Assignee:
Theratech, Inc., Salt Lake City, UT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01N / ;
U.S. Cl.
CPC ...
514424 ; 514652 ; 514657 ; 514 78 ; 514272 ; 514289 ; 514343 ; 514357 ; 514617 ; 514661 ;
Abstract
The invention is directed to compositions for topical application made up of active pharmaceutical permeants capable of existing in both free base and acid addition salt form. The permeants are present as a combination of both free base and acid addition salt forms. These combined forms provide skin penetration rates which are greater than the penetration rate of either the free base or acid addition salt forms utilized separately. The combined free base-acid addition salt permeants are formulated in a carrier vehicle which preferably also possesses skin penetration enhancement activity.