Patents Examined by Joesphine Barr
  • Oxides of the pyrochlore family and electrically resistant materials that contain them
    Patent number: 5069824
    Abstract: Electrically conductive oxides of the pyrochlore family based on copper and/or silver, lead, bismuth, and ruthenium, characterized by the formula M.sub.x M'.sub.y (Pb,Bi).sub.2-x-y Ru.sub.2 O.sub.7-z, wherein M=copper and/or silver, M'=calcium, strontium, and/or barium, 0.ltoreq.x.ltoreq.0.6, 0.1.ltoreq.y.ltoreq.1.0, and 0.1.ltoreq.z.ltoreq.1.0.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: December 3, 1991
    Assignee: W.C. Heraeus GmbH
    Inventors: Inge Blanke, Hans-Georg Burckhardt, Frieder Gora, Karlheinz Guldner, Jurgen Dehoust, Christina Modes, Sybille Kemmler-Sack, Joachim Schmidt