Patents by Inventor Werner Benker

Werner Benker 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: 5618767
    Abstract: The invention relates to a process or producing components of silicon carbide with addition of carbon and/or carbon-containing binders, in which the carbon is obtained at least in part by pyrolysis of the binders in the green component. The binder used is, according to the invention, modified starch preferably with a sulfamate or a sulfonic ester which is dispersible and/or soluble and/or dissolved in water.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: April 8, 1997
    Assignee: Hoechst CeramTec Aktiengesellschaft
    Inventor: Werner Benker
  • Patent number: 5324692
    Abstract: For silicizing porous moldings of silicon carbide/carbon, a mixture of silicon carbide powder, organic binder and, if appropriate, carbon is molded to give a green compact, the binder of the green compact is removed by carbonization at about 1000.degree. C. in a non-oxidizing atmosphere and the resulting blank is silicized by the action of molten silicon, while the resulting blank rests on a porous SiSiC carrier, whose lower part is in contact with the molten silicon. The carrier used may be a close packing of porous SiSiC rings which are arranged mutually parallel and perpendicularly on a graphite firing plate which is charged with silicon and is impermeable to molten silicon; or the carrier may be plane having a plurality of recess; or the carrier may have a straight channel with an angular cross section and recesses, into which the blank to be silicized is placed, wherein the SiSiC carrier has downward protruding side walls, whose undersides are in contact with the molten silicon.
    Type: Grant
    Filed: February 17, 1993
    Date of Patent: June 28, 1994
    Assignee: Hoechst CeramTec Aktiengesellschaft
    Inventors: Werner Benker, Juregen Schmidt
  • Patent number: 4957811
    Abstract: For producing a component of silicon-infiltrated silicon carbide, having a porous sliding surface, a component of silicon-infiltrated silicon carbide (composition: 40-95% by weight of SiC, 1-45% by weight of carbon particles of grain size 0.1 to 500 .mu.m and 1-25% by weight of silicon) is machined on parts of the surface, a sliding surface thus being produced. The resulting component is heated in an oxygen-containing atmosphere at temperatures from 700.degree. to 1410.degree. C. until the carbon particles present in the sliding surface have been at least partially oxidized with the formation of pores.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: September 18, 1990
    Assignee: Hoechst CeramTec Aktiengesellschaft
    Inventors: Werner Benker, Gert Lindemann, Jurgen Heinrich