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:
Jun. 17, 2014
Filed:
Jan. 29, 2013
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Kenji Imakita, Chiyoda-ku, JP;
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Abstract
To provide a glass ceramic composition with which a substrate for a light emitting element having a high reflectance and a high thermal conductivity can be obtained, and which can suppress breakage at the time of production of the substrate for a light emitting element. A glass ceramic composition to be used for production of a substrate on which a light emitting element is to be mounted, which comprises from 30 to 45 mass % of a glass powder, from 35 to 50 mass % of an alumina powder and from 10 to 30 mass % of a zirconia powder, to the total amount of the glass powder, the alumina powder and the zirconia powder, wherein the average particle size of the zirconia powder is at most ¼ of the average particle size of the alumina powder.