Patent · US Expired

Production of lamellar iron oxide pigments

US4404254A · kind A · utility

26Cited by

9References

16Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Gerhard Franz · Marl, DE
Franz Hund · Krefeld, DE

Key dates

Filing date	Jul 7, 1981
Grant date	Sep 13, 1983
Priority date	—
Expiry date	Jul 7, 2001

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/257
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Synthetic, hexagonal, lamellar iron oxide particles, suitable as corrosion-inhibiting or decorative colored pigments, containing about 0.1 to 12% by weight of at least one oxide of an element of the IVth, Vth or VIth Main and Secondary Groups and of the IInd Secondary Group of the Periodic System of Elements.

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