Patents by Inventor Rudi Hass

Rudi Hass 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).

  • Cast-iron element
    Patent number: 4927688
    Abstract: A cast-iron element with a non-iron interior area utilizes a molding core formed of a glass material, which may be tubular or solid and may, as desired, be entirely enclosed within the casting.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: May 22, 1990
    Assignee: Eisengiesserei Monforts GmbH & Co.
    Inventors: Rudi Hass, Georg Jansen, Wilhelm Kallen
  • Method of producing a cast-iron element
    Patent number: 4832107
    Abstract: A method and apparatus for casting a cast-iron element with a non-iron interior area utilizes a molding core formed of a glass material, which may be tubular or solid and may, as desired, be entirely enclosed within the casting.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: May 23, 1989
    Assignee: Eisengiesserei Monforts GmbH & Co.
    Inventors: Rudi Hass, Georg Jansen, Wilhelm Kallen