05076869 is referenced by 195 patents and cites 24 patents.

A method and apparatus for selectively sintering a layer of powder to produce a part comprising a plurality of sintered layers. The apparatus includes a computer controlling a laser to direct the laser energy onto the powder to produce a sintered mass. The computer either determines or is programmed with the boundaries of the desired cross-sectional regions of the part. For each cross-section, the aim of the laser beam is scanned over a layer of powder and the beam is switched onto sinter only the powder within the boundaries of the cross-section. Powder is applied and successive layers sintered until a completed part is formed. Preferably, the powder comprises a plurality of materials having different dissociation or bonding temperatures. The powder preferably comprises blended or coated materials.

Title
Multiple material systems for selective beam sintering
Application Number
920580
Publication Number
5076869
Application Date
July 30, 1990
Publication Date
December 31, 1991
Inventor
Carl R Deckard
Austin
TX, US
Joseph J Beaman
Austin
TX, US
Joel W Barlow
Austin
TX, US
Harris L Marcus
Austin
TX, US
David L Bourell
Austin
TX, US
Agent
Vinson & Elkins
Assignee
Board of Regents The University of Texas System
TX, US
IPC
B29C 67/00
B23K 9/00
B32B 31/00
B27N 3/00
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