Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Forming articles by uniting randomly associated particles
Reexamination Certificate
2005-03-03
2011-11-29
Johnson, Christina (Department: 1742)
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Forming articles by uniting randomly associated particles
C264S463000, C264S497000, C264S405000
Reexamination Certificate
active
08066933
ABSTRACT:
The present invention relates to a polymer powder which comprises polyamide, and to the use of this powder for shaping processes, and also to moldings produced from this polymer powder. The shaping processes are layer-by-layer processes which use powders, where regions of the respective layer are selectively melted via introduction of electromagnetic energy. The selectivity may—with no intention of restricting the invention thereto—be achieved via masks, application of inhibitors, of absorbers, or of susceptors, or via focusing of the energy introduced. After cooling, the regions then solidified can be removed in the form of moldings from the powder bed.
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Baumann Franz-Erich
Grebe Maik
Lohmar Jörg
Monsheimer Sylvia
EVONIK DEGUSSA GmbH
Huda Saeed
Johnson Christina
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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