Patent · US Expired

Substrate-free conductive pigments

US5536447A · kind A · utility

3Cited by

9References

13Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Gerhard Pfaff · Mainburg, DE
Gerd Bauer · Kleinostheim, DE

Key dates

Filing date	Sep 30, 1994
Grant date	Jul 16, 1996
Priority date	—
Expiry date	Sep 30, 2014

Classification

Technology area (CPC H)Electricity
CPC primaryH05F1/02
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Substrate-free electrically conductive pigment containing 90 to 98% by weight of tin oxide and 1 to 10% by weight of at least one doping substance consisting of an oxide of an element form main group III, IV or V of the Periodic Table with the exception of tin, which pigment is preparable by intimate mixing of tin dioxide with at least one doping substance, followed by calcining of the resulting mixture at 800.degree. to 1,000.degree. C. for 30 to 120 minutes.

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