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Last Updated: December 14, 2025

Claims for Patent: 4,144,317

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Summary for Patent: 4,144,317

Title:	Device consisting of copolymer having acetoxy groups for delivering drugs
Abstract:	Drug-delivery device for releasing a drug at a continuous and controlled rate for a prolonged period of time is comprised of a shaped body of polymeric material containing a pharmaceutically acceptable drug and permeable to passage of the drug by diffusion. The polymeric material is an ethylene-vinyl acetate copolymer having a vinyl acetate content of about 4 to 80% by weight and a melt index of about 0.1 to 1000 grams per 10 minutes.
Inventor(s):	Takeru Higuchi, Anwar Hussain
Assignee:	Alza Corp
Application Number:	US05/835,319
Patent Claims:

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