Patent · US Expired

Magnetic ink concentrate

US5250207A · kind A · utility

6Cited by

7References

2Claims

0Family size

Assignee

BASF SE

Inventors

Claudius Kormann · Schifferstadt, DE
Ekkehard Schwab · Neustadt, DE
Friedrich-Wilhelm Raulfs · Ludwigshafen, DE
Karin H. Beck · Ludwigshafen, DE

Key dates

Filing date	May 6, 1992
Grant date	Oct 5, 1993
Priority date	—
Expiry date	May 6, 2012

Classification

Technology area (CPC H)Electricity
CPC primaryH01F41/16
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A magnetic ink concentrate essentially consisting of a dispersion of superparamagnetic solid particles in water or alcohol in the presence of a dispersant, and a process for its preparation.

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