04014987 is referenced by 59 patents and cites 4 patents.

A device for the controlled continuous administration of an active agent to an environment of use is disclosed. The device comprises a body of erodible agent release rate controlling material containing an agent dispersed therethrough; the rate controlling material is a hydrophobic poly(carboxylic acid) having one ionizable carboxylic hydrogen for each 8 to 12 carbon atoms, which material erodes at a controlled and continuous rate over a prolonged period of time in response to the environment by a process of carboxylic hydrogen ionization, thereby releasing the dispersed agent at a controlled rate over a prolonged period of time.

Title
Device for delivery of useful agent
Application Number
318831
Publication Number
4014987
Application Date
June 30, 1975
Publication Date
March 29, 1977
Inventor
Richard W Baker
Bend
OR, US
Jorge Heller
Palo Alto
CA, US
Agent
Thomas E Ciotti
Edward L Mandell
Paul L Sabatine
Assignee
Alza Corporation
CA, US
IPC
A61K 9/02
A61K 47/00
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