Patents Assigned to Korund Laufenburg GmbH
  • Moulded spherical ceramic body, production process and use
    Patent number: 6284694
    Abstract: The present invention concerns a moulded microcrystalline spherical Al2O3- sintered body, process for its production as well as use.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: September 4, 2001
    Assignee: Korund Laufenburg GmbH
    Inventors: Paul Moeltgen, Pirmin Wilhelm, Martin Luette
  • Silicon-carbide sintered abrasive grain and process for its production
    Patent number: 5756409
    Abstract: Abrasive grain with significantly improved toughness is obtained by pressureless sintering of .alpha.-silicon carbide powder with oxidic sinter additives, especially aluminum oxide/yttrium oxide, which is also suitable for those applications where an ordinary silicon carbide abrasive grain is too brittle.
    Type: Grant
    Filed: October 21, 1996
    Date of Patent: May 26, 1998
    Assignee: Korund Laufenburg, GmbH
    Inventors: Franciscus van Dijen, Edgar Mayer