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:
Jan. 04, 1994
Filed:
Apr. 12, 1990
Applicant:
Inventor:
Altan Akyurek, 8560 Lauf/Pegn., DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
264 60 ; 264 61 ; 264113 ; 264332 ;
Abstract
Aluminum nitride powder (28), possibly powdered glass (29) and aluminum oxide powder (23) are introduced into the molding cavity of a pressure matrix (26) for fabrication of a carrier body from aluminum nitride, whose surface is at least partially covered with aluminum oxide. Subsequently a pressure stamp (22) of the pressure tool (20) is introduced into the molded cavity of the pressure matrix (26). The powdered layers (28, 29, 30) are compressed and subsequently sintered, for instance for two hours at 1600.degree. C. in a neutral atmosphere.