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:
Oct. 20, 1987
Filed:
Feb. 14, 1985
Applicant:
Inventors:
Akiyasu Okuno, Aichi, JP;
Masakazu Watanabe, Aichi, JP;
Assignee:
NGK Spark Plug Co., Ltd., Nagoya, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 90 ; 423345 ;
Abstract
A silicon carbide-graphite composite material is disclosed. The composite material includes graphite as a secondary phase which is segregated along the grain boundaries of all the silicon carbide grains. The graphite has an average grain size of not more than 3 .mu.m and is present in a proportion of 1 to 20 vol % based on the volume of the silicon carbide. The composite material has a density greater than 90% of the theoretical density. The composite material is a high density and high strength material.