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. 22, 2015
Filed:
Sep. 10, 2013
Ngk Insulators, Ltd., Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A laminated structureincludes a first structurecontaining a main phase of magnesium-aluminum oxynitride, a second structurecontaining a main phase of aluminum nitride and grain boundary phases of a rare-earth aluminum composite oxide having a garnet-type crystal structure, and a reaction layerformed between the first structureand the second structure. The reaction layeris an aluminum nitride layer containing a smaller amount of grain boundary phasesof the rare-earth aluminum composite oxide than the second structure. The reaction layerof the laminated structurehas a thickness of 150 μm or less. The reaction layeris formed during the sintering by diffusing the grain boundary phasesinto the first structure