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. 11, 1995
Filed:
Jan. 21, 1994
Applicant:
Inventors:
Kazuo Kondo, Aichi, JP;
Asao Morikawa, Aichi, JP;
Assignee:
NGK Spark Plug Co., Ltd., Aichi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264 44 ; 264 61 ; 427 96 ; 427373 ;
Abstract
A method of forming a substrate for electronic devices by forming a mixture of a liquid vehicle, crystalline glass powder and carbon powder into a slurry. The slurry is then formed into a desired shape and heated in an oxidizing atmosphere at a temperature less than 900.degree. C. for a time sufficient to oxidize the carbon powder and partially sinter the crystalline glass to form the porous substrate having closed porosity.