Patents by Inventor Robert Sheriff

Robert Sheriff 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).

  • Multi-layer refractory wear body
    Patent number: 5942316
    Abstract: The invention concerns a multi-layer refractory wear body having a wear layer being exposed to a direct thermal, mechanical and/or metallurgical attack, and at least another layer of a ceramic material having different physical properties.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: August 24, 1999
    Assignee: Didier-Werke AG
    Inventors: Ernst Luhrsen, Andreas Schuler, Robert Sheriff, Martin Wiesel