Patents by Inventor Gerhard Doring

Gerhard Doring 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).

  • Apparatus for treatment of exhaust gases
    Patent number: 4134733
    Abstract: A catalytic converter for use in the exhaust line of an internal combustion engine wherein the catalytically active noble metal coating is deposited only on the rearward portion of the inert carrier, with respect to the direction of flow of the exhaust gases, said inert carrier being fully coated with a washcoat capable of absorbing catalyst poisons before application of the catalytically active noble metal coating.
    Type: Grant
    Filed: December 13, 1977
    Date of Patent: January 16, 1979
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Herbert M. Volker, Polat Oser, Gerhard Doring, Harald Koch
  • Method of making a thermally insulated window frame
    Patent number: 4128934
    Abstract: To provide a frame with members having two outer elements which are interconnected by an insulator, each member is formed from a hollow bar in which the insulator is molded and then two longitudinal strips are removed from the bar, the two remaining parts of the bar forming the outer elements of the frame member. The bar is provided with longitudinal weakening grooves to facilitate removal of the strips, or the strips constitute mold members which clamp the outer elements and, together with the outer elements, define the hollow cavity within the bar.
    Type: Grant
    Filed: May 9, 1975
    Date of Patent: December 12, 1978
    Assignee: Firma Julius & August Erbsloh
    Inventor: Gerhard Doring