Patent · US Expired

Oxides of the pyrochlore family and electrically resistant materials that contain them

US5069824A · kind A · utility

4Cited by

3References

13Claims

0Family size

Assignee

W. C. Heraeus GmbH · DE

Inventors

Inge Blanke · Bad Laer, DE
Hans-Georg Burckhardt · Frankfurt, DE
Frieder Gora · Aschaffenburg, DE
Karlheinz Guldner · Aschaffenburg, DE
Jurgen Dehoust · Hanau, DE
Christina Modes · Frankfurt, DE
Sybille Kemmler-Sack · Tübingen, DE
Joachim Schmidt · Schlangen, DE

Key dates

Filing date	Apr 6, 1990
Grant date	Dec 3, 1991
Priority date	—
Expiry date	Apr 6, 2010

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2002/74
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.