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:
Jun. 02, 1998
Filed:
Oct. 18, 1996
Carl R Thornfeldt, Nampa, ID (US);
Peter M Elias, Muir Beach, CA (US);
Other;
Abstract
The epidermal permeability barrier to systemically and/or topically active agents or compositions designed for topical administration is enhanced to an unexpected degree by certain combinations of known penetration enhancing excipients. One group of combinations comprise a glycol and an alcohol at a weight ratio within the range of 1:0.1 to 1:10 with one or more further additives, selected from the excipient groups of branched-chain esters of fatty acids, surfactants, and membrane fluidizers. Another group of combinations comprise an alcohol of four or more carbon atoms and one or more further additives selected from the excipient groups of glycols and surfactants.