04088864 is referenced by 423 patents and cites 7 patents.

A high speed process and apparatus are disclosed for forming outlet passageways of accurate, predetermined size in the walls of pills which dispense their contents by osmotically pumping said contents out said outlet passageways. The pills are moved in succession by an indexer past a passageway forming station where the pills are tracked seriatim at the velocity at which they are moving by an optical tracking system focused on the pill wall and into which a laser beam is directed. During the tracking the laser is fired and the laser beam is transmitted by the optical tracking system onto the wall of the moving pill, the laser power, laser beam dimensions and firing duration being such as to cause the laser beam to heat and pierce the pill wall, thereby forming said outlet passageway.

Title
Process for forming outlet passageways in pills using a laser
Application Number
524585
Publication Number
4088864
Application Date
February 23, 1976
Publication Date
May 9, 1978
Inventor
Wayne S Mefford
Los Altos
CA, US
Richard J Saunders
San Jose
CA, US
Felix Theeuwes
Los Altos
CA, US
Agent
Edward L Mandell
Paul L Sabatine
Thomas E Ciotti
Assignee
Alza Corporation
CA, US
IPC
B23K 27/00
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