Patent · US Active

Nickel-free green pigment

US9187617B1 · kind B1 · utility

2Cited by

18References

22Claims

0Family size

Assignee

Ferro Corporation · US

Inventors

Hans-Peter Letschert · Bonn, DE
Stephan Ludwig · Kohlenbissen, DE
Terry J. Detrie · Washington, US
George E. Sakoske · Washington, US

Key dates

Filing date	Jun 4, 2014
Grant date	Nov 17, 2015
Priority date	—
Expiry date	Jun 4, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K2003/262
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A green pigment is a blend of metal oxides including a [124] spinel which can contain certain combinations of lithium, sodium, cobalt, zinc, calcium, magnesium, copper, titanium, manganese, tin, and germanium, and a [134] spinel which can contain certain combinations of lithium, sodium, chromium, boron, iron, manganese aluminum, titanium, tin and germanium. The pigment lacks nickel.

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