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:
Mar. 03, 2009
Filed:
Aug. 17, 2007
Ajmal Khan, Princeton, NJ (US);
Dmitri G. Brodkin, Livingston, NJ (US);
Ajmal Khan, Princeton, NJ (US);
Dmitri G. Brodkin, Livingston, NJ (US);
Pentron Ceramics, Inc., Somerset, NJ (US);
Abstract
Methods of forming a colored ceramic body or dental article are described that include: (a) forming a body from a ceramic-containing powder; (b) shaping the body into a desired shape; and (c) firing the shaped body in an atmosphere comprising at least one coloring agent. Methods of forming a fully dense ceramic body that lacks discoloration, are also described which include: (a) forming a body from a ceramic-containing powder; (b) shaping the body into a desired shape; (c) placing the shaped body in a firing atmosphere containing at least one impurity that promote discoloration of the ceramic body; (d) placing the ceramic body in proximity to an atmosphere powder; and (e) firing the shaped body in proximity to an atmosphere powder; wherein the atmosphere powder acts as at least one of a barrier and a getter for the at least one impurity.