The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2018
Filed:
Jul. 10, 2008
Ruediger Franke, Herrsching, DE;
Gallus Schechner, Seefeld, DE;
Holger Hauptmann, Sindelsdorf, DE;
Robert Schnagl, Jengen, DE;
Ruediger Franke, Herrsching, DE;
Gallus Schechner, Seefeld, DE;
Holger Hauptmann, Sindelsdorf, DE;
Robert Schnagl, Jengen, DE;
3M Innovative Properties Company, St. Paul, MN (US);
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.