Patents by Inventor Otto Hiris

Otto Hiris 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).

  • Metallurgical vessel lining arrangement
    Patent number: 4077616
    Abstract: A lining arrangement for metallurgical vessels has a frame, a lifting scaffold arranged thereon comprised of at least two tube elements composed of tube pieces, and a working platform arranged on top of the lifting scaffold. The tube pieces are telescopically movable into one another.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: March 7, 1978
    Assignee: Vereinigte Osterreichische Eisen- und Stahlwerke-Alpine Montan Aktiengesellschaft
    Inventors: Hellmuth Smejkal, Otto Hiris, Helmut Mayrandl