04564363 is referenced by 90 patents and cites 14 patents.

A device for effecting the delayed release of an active ingredient comprises a container and, within, a dispersible unit of ingredient, a removable closure and a electrical control circuit for removal of said closure at a designated time to release the active ingredient. Several assemblies are combined to control the administration of veterinary medicaments to ruminant animals as a specific application of the invention.

Title
Delayed action assembly
Application Number
6/513512
Publication Number
4564363
Application Date
July 13, 1983
Publication Date
January 14, 1986
Inventor
Robert J Gyurik
Downingtown
PA, US
Brian G Bagnall
Berwyn
PA, US
Agent
Alan D Lourie
Richard D Foggio
William H Edgerton
Assignee
SmithKline Beckman Corporation
PA, US
IPC
A61M 31/00
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