Patents Assigned to Keramont Italia S.p.A.
  • Ceramic preforms having high mechanical strength, a process for their preparation and metal matrix composites obtained from said ceramic preforms
    Patent number: 5164346
    Abstract: Preforms for metal matrix composites consisting of ceramic material belonging to the class of oxides, nitrides, carbides, borides, oxynitrides and the like, prevailingly in an acicular form and having monocrystalline or polycrystalline structure, having a density ranging from 0.2 to 1.6 g/cm.sup.3 and porosity ranging from 50 to 95%.
    Type: Grant
    Filed: May 4, 1990
    Date of Patent: November 17, 1992
    Assignee: Keramont Italia, S.p.A.
    Inventors: Giovanni Giunchi, Andrea Adembri
  • Refractory and electroconductive ceramic compositions and process for the preparation thereof
    Patent number: 5068211
    Abstract: Refractory and electroconductive ceramic compositions having a density higher than 4 g/cm.sup.3, ultimate tensile strength higher than 250 MPa, Vickers microhardness higher than 1000 kg/mm.sup.2 and electric resistivity lower than 600 microohm.cm, essentially consisting of alumina and of a nitride component of at least one transition metal belonging to groups IVB, VB or VIB of the Periodic Chart of the Elements.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: November 26, 1991
    Assignee: Keramont Italia S.p.A.
    Inventors: Giovanni Giunchi, Ender Savrun, Alberto Grenni, Ching-Fong Chen