Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Using laser sintering of particulate material to build...
Reexamination Certificate
2008-09-02
2008-09-02
Tentoni, Leo B (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Using laser sintering of particulate material to build...
C264S040600, C264S113000, C264S408000, C264S410000
Reexamination Certificate
active
10637866
ABSTRACT:
A process and a device for producing a three-dimensional object is provided, with which process or device the object is produced by layer-wise solidification of a pulverulent material by sintering of the material at the points corresponding to the cross-section of the object by means of the action of radiation energy. The process comprises the application of a layer of the pulverulent material onto a substrate or a previously sintered layer, pre-heating of the pulverulent material to a working temperature below the temperature at which the powder is sintered and sintering of the material at the points corresponding to the cross-section of the object in the layer, wherein a step of controlled heating of an applied powder layer and of determining the quantity of heat taken up by the powder per (FIG.3) temperature interval for at least two temperature intervals is carried out.
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Edwards Angell Palmer & & Dodge LLP
EOS GmbH Electro Optical Systems
Neuner George W.
Tentoni Leo B
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