Patent · US Active

Process for producing a three-dimensional object

US11732133B2 · kind B2 · utility

0Cited by

1References

28Claims

0Family size

Assignee

EOS GmbH Electro Optical Systems · DE

Inventors

Andreas Pfister · Munich, DE
Andreas Hotter · Kundl, AT
Peter Keller · Bruchmühlbach-Miesau, DE
Karl Freihart · Novi, US

Key dates

Filing date	Apr 25, 2018
Grant date	Aug 22, 2023
Priority date	—
Expiry date	Oct 5, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2650/40
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for producing a three-dimensional object by selectively layer-by-layer solidification of a powdery material layer at the locations corresponding to the cross-section of the object in a respective layer by exposure to electromagnetic radiation. The powdery material comprises at least one polymer which is obtainable from its melt only in substantially amorphous or completely amorphous form, or a polyblend which is obtainable from its melt only in substantially amorphous or completely amorphous form. The powdery material has a specific melting enthalpy of at least 1 J/g.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.