Patents by Inventor Hans Mathiak

Hans Mathiak 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).

  • Plug for protecting coke-oven chamber doors from the action of the internal temperature in the oven
    Patent number: 4231846
    Abstract: A plug for protecting coke-oven chamber doors from the action of the internal temperature in the oven, which has a plane outside facing away from the door body, and which is built up from a plurality of refractory bricks and can be mounted on the inside of the door body. The bricks have recesses which each penetrate the plug and bricks for receiving bolts which can be screwed into bores in the plug side of the door.
    Type: Grant
    Filed: May 31, 1978
    Date of Patent: November 4, 1980
    Assignee: Ruhrkohle, AG.
    Inventors: Hans Mathiak, Hans Oldengott