Patents by Inventor Christian Grunewald

Christian Grunewald 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).

  • Process for producing structural elements
    Patent number: 6283194
    Abstract: A process for producing structural elements, preferably prototypes, in which a “lost” model, i.e., positive model, of the structural element is produced in a first step and the model is subsequently cast with a molding compound to produce a negative mold. The mold is then used for manufacturing the structural element, preferably a prototype, by casting. The model is cast and/or filled with the molding compound in a plurality of successive steps and the position of the model relative to a reference plane is changed in each of the individual steps of casting or filling.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: September 4, 2001
    Assignee: Grunewald GmbH & Co. KG
    Inventors: Jörg Stefan Detering, Christian Grunewald
  • Fastener for an accessory band
    Patent number: D816540
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: May 1, 2018
    Inventors: Christian Grünewald, Tanja Weissenrieder
  • Fastener for an accessory band
    Patent number: D826776
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: August 28, 2018
    Inventors: Christian Grünewald, Tanja Weissenrieder