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:
Sep. 06, 1988
Filed:
Jul. 17, 1986
Hans R Hoffmann, Neuwied, DE;
Reinhold Meconi, Neuwied, DE;
Michael Wolff, Monheim, DE;
Horst Zerbe, Monheim, DE;
Lohmann GmbH & Co. KG, Neuwied, DE;
Sanol Schwarz GmbH, Monheim, DE;
Abstract
The present invention is related to a pharmaceutical product preferably in medical bandage form, for the controlled release of a therapeutically active agent or several such agents to the skin. The pharmaceutical product of the invention consists of an impermeable backing layer, a particularly composed supersaturated reservoir layer for the therapeutically active agent connected therewith and comprising a polymer matrix wherein the therapeutically active agent is soluble and which is permeable to the active agent, an adhesive layer connected with the reservoir layer and permeable to the active agent, and a cover layer covering and adhering to said adhesive layer and removable therefrom for the use of the pharmaceutical product as transdermal therapeutic system, said reservoir layer for the therapeutically active agent consisting of a multitude of layers wherein the concentration of the therapeutically active agent increases from layer to layer with increasing distance from the adhesive layer, and process for producing such a pharmaceutical product.