Patents by Inventor James U. Korein

James U. Korein has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method employing sequential two-dimensional geometry for producing shells for fabrication by a rapid prototyping system
    Patent number: 5587913
    Abstract: Beginning with a CAD specification of an object, the method and apparatus of the invention reduces the overall time to produce a shell of the object with a rapid prototyping machine. The reduction in time is achieved by interleaving the computation and the building tasks and by not requiring an explicit evaluation of a shell of the solid at the outset. The method is shown to operate with STL data, or with other CAD data, directly, and can also be employed to create non-planar objects, such as models of sheet metal parts that are represented only as surfaces. Furthermore, the method can be employed to produce a smooth outer surface even when employing polyhedral approximations to the surfaces of the object.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: December 24, 1996
    Assignee: Stratasys, Inc.
    Inventors: Steven R. Abrams, James U. Korein, Vijay Srinivasan, Konstantinos Tarabanis