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:
May. 25, 1993
Filed:
Jan. 14, 1992
Applicant:
Inventors:
Akira Yamakawa, Itami, JP;
Koichi Sogabe, Itami, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C / ; C04B / ;
U.S. Cl.
CPC ...
501 32 ; 501 96 ;
Abstract
A glass-aluminum nitride composite comprising a sintered body is produced by adding glass powder to aluminum nitride grains having an oxygen content of less than 2% and a mean grain diameter of 1.0 .mu.m or more and subjecting the mixture to molding and sintering. A suitable glass is one based on borosilicate and the addition of an AlN whisker serves to improve the strength. The composite material of the present invention has a high heat conductivity, a low permittivity and a high strength and is suitable as a semiconductor packaging material.