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. 18, 1976
Filed:
Jan. 21, 1975
Seymour Katz, Southfield, MI (US);
Michael M Shea, Mt. Clemens, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
In accordance with a preferred embodiment of this invention, a low-sulfur, low-ash, graphitic carbon, which is useful in metallurgical and electrical applications, is formed. The first step is dissolving coke or coal in an iron melt containing about 4% silicon, then lowering the temperature of the melt to near the iron-carbon eutectic melting temperature, thereby causing a purified carbon-iron mixture to precipitate and float to the surface. This mixture may be directly used as a metallurgical carbon raiser to control the carbon content of iron melts. The purified carbon may also be separated from the iron by magnetic and/or flotation techniques; further refinement of the graphite may be accomplished by treatment with mineral acids.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile