Patents by Inventor Rainer Prange

Rainer Prange 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).

  • Patent number: 5458833
    Abstract: Method for the production of sintered dolomite, wherein at least carbonate material is ground into particles, formed into a predetermined shape, such as briquettes, deacidified and then heated to a predetermined temperature.
    Type: Grant
    Filed: July 22, 1993
    Date of Patent: October 17, 1995
    Assignee: Dolomitwerke GmbH
    Inventors: Thomas Hammer, Heinzjosef Poggenpohl, Rainer Prange, Herbert Richrath, Alfred Roeder
  • Patent number: 4877761
    Abstract: A refractory composition for use, preferably as a lining of a metallurgical vessel is disclosed. The refractory composition includes sintered oxide granulations, based on magnesium oxide, dolomite, calcium oxide or a combination thereof, an organic binder having a mixture containing carbomethoxy-substituted oligophenyls, carbomethoxy-substituted benzyl esters or a combination thereof, and 0 to 20 parts by weight of a fine particulate carbon carrier per 100 parts by weight sintered oxide. A process for the production of a pressed body employing the refractory composition of the invention is also disclosed.
    Type: Grant
    Filed: April 11, 1989
    Date of Patent: October 31, 1989
    Assignee: Dolomitwerke GmbH
    Inventors: Max Chmiel, Rainer Prange
  • Patent number: 4549906
    Abstract: Basic fire resistant material comprised of burned or calcined sintered dolomite and organic binding means having plastic properties which can be densified at low pressures, whose shaped bodies have intermediate and final strengths in a temperature range between 300.degree. and 1600.degree. C. in which, related to the fire resistant basic materials, the proportion of binding means is 3 to 8% by weight wherein 0.1 to 2% by weight are silicon-organic compounds, and the fire resistant basic materials are from 10 to 15% by weight of particles having a particle size smaller than 45 .mu.m.
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: October 29, 1985
    Assignee: Dolomitwerke GmbH
    Inventors: Bernd Wyskott, Rainer Prange, Kurt Moller, Joachim Fleischer