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:
Sep. 22, 1981
Filed:
Jun. 13, 1980
Applicant:
Inventors:
Shigeaki Maruhashi, Yamaguchi, JP;
Morihiro Hasegawa, Yamaguchi, JP;
Takashi Yamauchi, Yamaguchi, JP;
Assignee:
Nisshin Steel Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ; C22B / ;
U.S. Cl.
CPC ...
75 52 ; 75 53 ; 75257 ;
Abstract
A process for dephosphorization-denitrification of Cr-containing pig iron by oxidizing refining is disclosed. Said process comprises maintaining the Si content of the molten iron at not more than 0.2%, contacting it with a slag comprising at least one of fluorides and chlorides of alkaline earth metals, at least one of lithium oxide and carbonate, and at least one of oxides of iron and nickel, while controlling oxidation of Cr.
Maruhashi, Shigeaki. (1981). Process for dephosphorization and denitrification of chromium-containing (U.S. Patent No. 4290803). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4290803
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile