Patents by Inventor Wolfram Wischnack

Wolfram Wischnack 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).

  • Casting core and process for the production thereof
    Patent number: 4361181
    Abstract: A casting core for the creation of difficultly accessible cavities in castings of aluminum or of one of its alloys, produced from a water-soluble salt as base substance and burnt sugar as binding agent, and a process for the production of such a casting core wherein the base substance is mixed with burnt sugar in aqueous or organic solution, pressed in molds, and baked at elevated temperature.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: November 30, 1982
    Assignee: Alcan Aluminiumwerk Nurnberg GmbH
    Inventors: Wolfram Wischnack, Alfred Dobner