Patent · US Active

Colouring solution for dental ceramic articles and related methods

US10065895B2 · kind B2 · utility

2Cited by

32References

24Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Ruediger Franke · Herrsching am Ammersee, DE
Gallus Schechner · Herrsching am Ammersee, DE
Holger Hauptmann · Sindelsdorf, DE
Robert Schnagl · Landsberg, DE

Key dates

Filing date	Jul 10, 2008
Grant date	Sep 4, 2018
Priority date	—
Expiry date	Mar 13, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2111/82
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention relates to a coloring solution for coloring a dental ceramic article, the solution comprising: a solvent and a coloring agent, comprising rare earth element metals or ions being present in the solution in an amount of at least about 0.05 mol/1 solvent and transition metals or ions being present in the solution in an amount of about 0.00001 to about 0.05 mol/1 solvent. The invention also relates to a process for coloring dental ceramic articles, dental ceramic articles treated either with the coloring solution or obtainable by a process comprising the step of firing the dental ceramic articles.

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