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:
Aug. 16, 1994
Filed:
Dec. 21, 1992
Applicant:
Inventors:
Shigeru Hanzawa, Kagamihara, JP;
Tsuneo Komiyama, Toki, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C01B / ;
U.S. Cl.
CPC ...
4274301 ; 4273762 ; 4273977 ; 427431 ; 4274432 ; 264 56 ; 264 60 ; 501 88 ; 501 89 ; 501 90 ;
Abstract
A silicon-carbide sintered article prepared by permeating molten silicon into a carbon compact of elemental carbon, wherein Lc(002), which indicates a length of a domain in the direction perpendicular to the C(002) surface of elemental carbon in the carbon compact, is up to 1000 angstrom. The resulting article includes silicon carbide, silicon, and up to about 1 percent by weight of residual elemental carbon based on the sum of the silicon carbide and the silicon.