The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 1999
Filed:
Oct. 22, 1997
Hans Langer, Grafelfing, DE;
Johannes Reichle, Munchen, DE;
EOS GmbH Optical Systems, Planegg, DE;
Abstract
In a method for producing a three-dimensional object wherein the object is generated by successive solidification of individual layers of the object from a liquid or powdery material by action of electromagnetic radiation, the problem arises that the object is either distorted due to shrinkage of the material or that the quality of the surface of the object is poor when using a corresponding shrinkage reducing construction. For the solution of this problem, each layer is separated in an inner core region (2) and an outer shell region (3) and the action of the radiation is controlled in the core region and in the shell region for generating different properties of both regions.