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:
Feb. 08, 1994
Filed:
Dec. 10, 1992
Applicant:
Inventors:
Mitsuo Kasori, Kawasaki, JP;
Akihiro Horiguchi, Kawasaki, JP;
Yoshiko Goto, Tokyo, JP;
Fumio Ueno, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
156 89 ; 156325 ;
Abstract
In an aluminum nitride structure, a plurality of aluminum nitride regions having different purities are integrally formed to satisfy a predetermined positional relationship, and neighboring regions are brought into direct contact with each other to form an abrupt junction therebetween. Therefore, the aluminum nitride structure has anisotropy in physical properties such as a thermal conductivity, a light transmittance, and a strength.