05523095 is referenced by 10 patents and cites 39 patents.

This invention relates to a controlled release matrix system comprising a homogenous mixture of polyvinylpyrrolidone, cellulose acetate having a degree of substitution for acetyl of from about 0.5 to 3.0, and a water-soluble active ingredient.

Title
Controlled release matrix system using cellulose acetate/polyvinylpyrrolidone blends
Application Number
8/167609
Publication Number
5523095
Application Date
December 15, 1993
Publication Date
June 4, 1996
Inventor
Stephen S Kelley
Evergreen
CO, US
Jessica Posey Dowty
Kingsport
TN, US
Alan K Wilson
Kingsport
TN, US
Agent
Harry J Gwinnell
Betty J Boshears
Assignee
Eastman Chemical Company
TN, US
IPC
A61K 9/16
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