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. 28, 1996
Filed:
May. 10, 1995
Peter R Duncombe, Peekskill, NY (US);
Subhash L Shinde, Croton-on-Hudson, NY (US);
Takeshi Takamori, Mahopac, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An unsintered aluminum nitride body including: (a) 1 to 5 weight percent of a vitreous solid of boria, alumina, and calcia in the proportions of (1) boria between 3 and 25 weight percent, (2) alumina between 10 and 50 weight percent, and (3) calcia between 40 and 80 weight percent; and (b) aluminum nitride powder as the balance of the aluminum nitride body. The invention further relates to a method of forming the unsintered aluminum nitride body and then sintering it at a temperature between 1550 and 1650 degrees Centrigrade so as to form a dense, thermally conductive aluminum nitride body.