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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 11208703 B1

PDFFull Text
Date of Patent:
Dec. 28, 2021

Filed:

Nov. 30, 2017

Nickel-containing steel for low temperature service and low-temperature tank

Applicant:

Nippon Steel Corporation, Tokyo, JP;

Inventors:

Kazuyuki Kashima, Tokyo, JP;

Takayuki Kagaya, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Humera N Sheikh

Assistant Examiner:

John D Schneible

Int. Cl.
CPC ...
C22C 38/08 (2006.01); C21D 9/46 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/16 (2006.01); C22C 38/44 (2006.01); C22C 38/50 (2006.01); C22C 38/60 (2006.01); F17C 13/00 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/0205 (2013.01); C21D 8/0263 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/16 (2013.01); C22C 38/44 (2013.01); C22C 38/50 (2013.01); C22C 38/60 (2013.01); F17C 13/004 (2013.01); C21D 2211/001 (2013.01); C22C 38/08 (2013.01); F17C 2203/0639 (2013.01); F17C 2221/033 (2013.01); F17C 2270/0105 (2013.01);
Abstract

A nickel-containing steel for low temperature service having a determined chemical composition of a Ni content of from 5.0 to 8.0%, in which the volume fraction of retained austenite in a region of 1.5 mm from a surface in the thickness direction is from 3.0 to 20.0% by volume, and the ratio of the hardness in a region of 1.0 mm from a surface in the thickness direction to the hardness in a region of ¼ of the thickness from a surface in the thickness direction is 1.1 or less, and a low-temperature tank using the nickel-containing steel for low temperature service.

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Kashima, Kazuyuki. (2021). Nickel-containing steel for low temperature service and low-temperature tank (U.S. Patent No. 11208703). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11208703

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

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