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. 17, 1977
Filed:
Apr. 24, 1975
Applicant:
Inventors:
Ryuichi Nakagawa, Tokyo, JA;
Takuya Ueda, Zushi, JA;
Shiro Yoshimatsu, Tokyo, JA;
Akira Sato, Omiya, JA;
Tatsuro Mitsui, Sagamihara, JA;
Tsuyoshi Ozaki, Tokyo, JA;
Akira Fukuzawa, Yokohama, JA;
Assignee:
National Research Institute for Metals, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 13 ; 164 51 ;
Abstract
A process for regenerating steel scrap by melting and refining it, the improvement wherein carbon is added to molten scrap steel melt in an amount sufficient to adjust the carbon content of the melt to 0.6 to 3.0%, and the scrap steel is refined by blowing oxygen therein. This method can also be applied to the production of steel from reduced iron.