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:
Apr. 04, 1989
Filed:
Aug. 03, 1987
Applicant:
Inventors:
Assignee:
W. C. Heraeus GmbH, Hanau Lauten, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B22B / ;
U.S. Cl.
CPC ...
428469 ; 427 96 ; 427123 ; 4271262 ; 4271263 ; 427226 ; 427229 ; 427212 ; 4273761 ; 4273766 ; 427380 ; 428 45 ; 428697 ; 428678 ; 428679 ; 428704 ; 428901 ;
Abstract
To permit using a single firing step, sintered aluminum nitride ceramic bodies provided with firmly adhering electrically conductive films or resistive layers can be produced by sintering of the green ceramic bodies and the films or layers in common, if these films or layers additionally contain a mixture of aluminum nitride and rare earth metal oxide.