04434153 is referenced by 132 patents and cites 4 patents.

A delivery device is disclosed for delivering a beneficial drug to a biological environment of use. The device comprises a hydrogel reservoir containing tiny pills. The tiny pills comprise a wall surrounding a drug core.

Title
Drug delivery system comprising a reservoir containing a plurality of tiny pills
Application Number
6/360477
Publication Number
4434153
Application Date
March 22, 1982
Publication Date
February 28, 1984
Inventor
Felix Theeuwes
Los Altos
CA, US
John Urquhart
Palo Alto
CA, US
Agent
Edward L Mandell
Paul L Sabatine
Assignee
Alza Corporation
CA, US
IPC
A61J 7/00
A61K 9/28
A61K 9/26
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