Patent · US Expired

Method of manufacturing a fine monodisperse oxide powder, a fine monodisperse oxide powder, a ceramic composition and their use of same

US5520900A · kind A · utility

1Cited by

7References

11Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Detlev Hennings · Aachen, DE
Rainer Waser · Aachen, DE
Peter Scharff · Clausthal-Zellerfeld, DE

Key dates

Filing date	Oct 14, 1994
Grant date	May 28, 1996
Priority date	—
Expiry date	Oct 14, 2014

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S264/25
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Fine, monodisperse oxide powders can be manufactured by means of a method which does not require expensive production facilities, in which method PA1 a graphite intercalation compound is manufactured by reacting one or more chemical starting compounds of one or more elements of the groups Ib, IIa, IIb, IIIa, IIIb, IVa, IVb, Va, Vb, VIa, VIb, VIIb, VIII of the periodic table as well as of the lanthanides and actinides with a graphitic carbon modification having a grain size.ltoreq.150 .mu.m, and PA1 the graphite intercalation compound is converted by an oxidation agent into binary oxide of one or more elements of the groups Ib, IIa, IIb, IIIa, IIIb, IVa, IVb, Va, Vb, VIa, VIb, VIIb, VIII of the periodic table as well as of the lanthanides and actinides.

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