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Last Updated: December 17, 2025

Claims for Patent: 4,994,267

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Summary for Patent: 4,994,267

Title:	Transdermal acrylic multipolymer drug delivery system
Abstract:	A dermal composition comprising a drug, a multipolymer of ethylene-vinyl acetate, an acrylic polymer, and optionally one or more monomers, a natural or synthetic rubber and a tackifying agent. The ratio of the multipolymer to the rubber is, respectively, about 1:1 to about 10:1 and more preferably, 1:1 to 5:1 and more preferably 3:1. The dermal composition can optionally contain a crosslinking agent, tackifiers, penetration enhancers and other ingredients known for use in adhesives for the transdermal delivery of drugs. The dermal compositions can be produced by a variety of methods known in the preparation of drug containing adhesive preparations including the homogenous mixing of the multipolymer, drug and optional crosslinking agent and additional ingredients in solution or suspension or emulsion followed by removal of excess solvent.
Inventor(s):	Steven Sablotsky
Assignee:	Noven Pharmaceuticals Inc, Aventis Pharmaceuticals Inc
Application Number:	US07/295,847
Patent Claims:

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