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:
May. 30, 1995
Filed:
Apr. 14, 1994
Applicant:
Inventors:
Tsuyoshi Matsumoto, Kagawa, JP;
Toru Hoshikawa, Kagawa, JP;
Assignee:
Toyo Tanso Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423448 ; 4234491 ; 423460 ; 423461 ;
Abstract
A method for manufacturing a high purity graphite material comprises a baking process of a carbon material, a graphitizing process of the material and a highly purifying process of the material in sequential order, the highly purifying process of the material being carried out by high-frequency heating means under vacuum or reduced pressure. An apparatus for manufacturing a high purity graphite material comprises a container capable of being made vacuous or depressurized and in which an induction heating high-frequency coil and a graphite heater are incorporated, the container being provided with a gas discharge pipe and a gas supply pipe.