04865845 is referenced by 179 patents and cites 20 patents.

A sleeve shaped structure covers a portion of the transport area of a diffusional or osmotic delivery device. The structure is durable and inert to the use environment. Markings on the structure indicate where breaking or cutting will produce a predictable alteration in delivery rate. Among other attachment means, a water soluble adhesive maintains the structure on the delivery device.

Title
Release rate adjustment of osmotic or diffusional delivery devices
Application Number
842687
Publication Number
4865845
Application Date
August 28, 1987
Publication Date
September 12, 1989
Inventor
John Urquhart
Palo Alto
CA, US
James B Eckenhoff
Los Altos
CA, US
Agent
Paul L Sabatine
Steven F Stone
Edward L Mandell
Assignee
ALZA Corporation
CA, US
IPC
A61M 31/00
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