Patents by Inventor Dave Retallick

Dave Retallick 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 and apparatus for producing a three-dimensional object
    Patent number: 5658412
    Abstract: In a method for producing a three-dimensional object wherein the object is produced layer by layer by applying a layer of a material which can be solidified by irradiation with electromagnetic radiation and subsequently solidifying the layer at the points corresponding to the object by irradiation the problem is encountered that the production process is considerably delayed by long heating and cooldown times within the apparatus used for the production. According to the invention this problem is solved by irradiating and thereby solidifying in each layer a region of the material surrounding the object so as to produce a container wall (26) for the material (21).
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: August 19, 1997
    Assignee: EOS GmbH Electro Optical Systems
    Inventors: Dave Retallick, Johannes Reichle, Hans J. Langer