Patents by Inventor Ingeborg Schub

Ingeborg Schub 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: 4661155
    Abstract: A molded, boron carbide-containing, sintered article which includes at least 65 percent by volume boron carbide; and from 5 to 35 percent by volume of at least one binder metal selected from the group consisting of molybdenum, molybdenum alloys, tungsten and tungsten alloys, having a melting point above 1,800.degree. C., and forming no molten borides or carbides within a temperature range of from 1,800.degree. to 1,950.degree. C. A method for producing the article includes the steps of mixing to obtain a homogeneous mixture from 20 to 80 percent by weight boron carbide particles having a particle size ranging from 1 to 1,650 microns with up to 80 percent by weight of particles of the at least one binder metal having a particle size ranging from 35 to 100 microns; introducing the homogeneous mixture into a graphite matrix mold; heating to sinter the homogeneous mixture at a temperature ranging from 1,800.degree. to 2,000.degree. C.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: April 28, 1987
    Assignee: Kernforschungszentrum Karlsruhe GmbH
    Inventors: Volker Heinzel, Hossein-Ali Keschtkar, Ingeborg Schub