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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.:

US 11098384 B1

PDFFull Text
Date of Patent:
Aug. 24, 2021

Filed:

Jun. 13, 2017

Sulfur additive for molten steel and method for producing resulfurized steel

Applicant:

Nippon Steel Corporation, Tokyo, JP;

Inventors:

Hajime Hasegawa, Tokyo, JP;

Susumu Kudo, Tokyo, JP;

Mitsuhiro Matsushima, Tokyo, JP;

Tetsuro Sekiuchi, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Jenny R Wu

Int. Cl.
CPC ...
C21C 7/00 (2006.01); C22C 38/54 (2006.01); C22C 38/50 (2006.01); C22C 38/48 (2006.01); C22C 38/24 (2006.01); C22C 38/44 (2006.01); C22C 38/42 (2006.01); C22C 38/06 (2006.01); C22C 38/58 (2006.01); C22C 38/00 (2006.01); C22C 38/60 (2006.01);
U.S. Cl.
CPC ...
C21C 7/00 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/06 (2013.01); C22C 38/24 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01); C22C 38/60 (2013.01);
Abstract

A sulfur additive is added to molten steel. At that time, the yield of sulfur in the molten steel is stabilized and nozzle blockage at the time of continuous casting due to impurities is prevented. A sulfur additive used for molten steel which contains iron sulfide ore particles with a particle size of 5.0 to 37.5 mm in 85 mass % or more with respect to the total mass % of the sulfur additive is used to produce Al deoxidized resulfurized steel containing S: 0.012 to 0.100 mass %.

Find Patent Forward Citations

Hasegawa, Hajime. (2021). Sulfur additive for molten steel and method for producing resulfurized steel (U.S. Patent No. 11098384). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11098384

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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