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. 10, 1985
Filed:
Apr. 29, 1982
Applicant:
Inventors:
Yukio Takeda, Hitachi, JP;
Satoru Ogihara, Hitachi, JP;
Mitsuru Ura, Hitachi, JP;
Kousuke Nakamura, Hitachi, JP;
Tadamichi Asai, Ibaraki, JP;
Tokio Ohkoshi, Hitachi, JP;
Yasuo Matsushita, Hitachi, JP;
Kunihiro Maeda, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 96 ; 501 98 ; 501 97 ; 501153 ;
Abstract
Sintered aluminum nitride having a high thermal conductivity, which comprises at least 65% by weight of aluminum nitride, and at least one of beryllium, a beryllium compound, lithium and a lithium compound, and a semi-conductor device using the same.