Patents by Inventor Gunther L. Mortl

Gunther L. Mortl 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).

  • Refractory chrome-magnesia bricks and compositions made from granular fused material
    Patent number: 4366256
    Abstract: Refractory chrome-magnesia bricks and compositions composed of a granular fused material having a grain size of 12 mm or less, and a content of from 71 to 83 wt. % Cr.sub.2 O.sub.3 and from 17 to 29 wt. % MgO, the minimum content of Cr.sub.2 O.sub.3 and MgO being 94 wt. %.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: December 28, 1982
    Assignee: Osterreichisch-Amerikanische Magnesit Aktiengesellschaft
    Inventor: Gunther L. Mortl
  • Refractory compositions
    Patent number: 4208214
    Abstract: Improved carbon-containing, chemically bonded, refractory compositions, usually magnesia or alumina base, including about 1% to 20% by weight carbon and about 0.5% to 10% by weight steel fibers, low carbon steel fibers, or stainless steel fibers of about 10-50 mm in length and about 0.1 mm to about 1.0 mm in diameter of any cross-sectional shape distributed in the carbon-bearing matrix and bonded thereto. Other fibers compatible with both the intended application and the base composition may also be used.
    Type: Grant
    Filed: April 21, 1978
    Date of Patent: June 17, 1980
    Assignee: General Refractories Company
    Inventors: Joseph L. Stein, George A. Russell, Jr., Gunther L. Mortl
  • Refractories using boric acid and water soluble alcohol binder
    Patent number: 4021254
    Abstract: Refractory materials such as magnesia and mixtures of magnesia and chromite are formed into refractory compositions or unburnt brick utilizing a binder containing a mixture of boric acid and a water-soluble polyhydric alcohol.
    Type: Grant
    Filed: March 19, 1976
    Date of Patent: May 3, 1977
    Inventors: Gunther L. Mortl, Johann Lederer