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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 10619950 B1

PDFFull Text
Date of Patent:
Apr. 14, 2020

Filed:

Apr. 02, 2014

Stainless steel and method of manufacturing the same

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;

Inventors:

Yu Takanezawa, Nisshin, JP;

Izuru Yamamoto, Toyota, JP;

Keisuke Kadota, Toyota, JP;

Hironori Aoyama, Toyota, JP;

Toshiya Yamaguchi, Nagoya, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Alexandra M Moore

Int. Cl.
CPC ...
F28F 21/08 (2006.01); F01N 13/16 (2010.01); C22C 38/44 (2006.01); B32B 15/01 (2006.01); C21D 6/00 (2006.01); C23C 8/80 (2006.01); C23C 8/04 (2006.01); C22C 38/40 (2006.01); C23C 10/60 (2006.01); C23C 10/08 (2006.01); C21D 9/46 (2006.01); C23C 8/26 (2006.01); C22C 38/22 (2006.01); C22C 38/28 (2006.01); C22C 38/18 (2006.01); C21D 1/74 (2006.01); C21D 1/773 (2006.01); C22C 38/00 (2006.01); C22C 38/06 (2006.01); C22C 38/46 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01); C22C 38/58 (2006.01);
U.S. Cl.
CPC ...
F28F 21/082 (2013.01); B32B 15/01 (2013.01); B32B 15/011 (2013.01); C21D 1/74 (2013.01); C21D 1/773 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 9/46 (2013.01); C22C 38/002 (2013.01); C22C 38/06 (2013.01); C22C 38/18 (2013.01); C22C 38/22 (2013.01); C22C 38/28 (2013.01); C22C 38/40 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01); C23C 8/04 (2013.01); C23C 8/26 (2013.01); C23C 8/80 (2013.01); C23C 10/08 (2013.01); C23C 10/60 (2013.01); F01N 13/16 (2013.01); C21D 2211/001 (2013.01); F01N 2510/08 (2013.01); F01N 2510/10 (2013.01); F01N 2530/04 (2013.01);
Abstract

A stainless steel that includes chromium and other alloying element as a plurality of alloying elements including: a base material layer including chromium of a specified chromium content necessary for forming a passive film or more; and a superficial layer including chromium at a lower chromium content than the chromium content contained in the base material layer, and the superficial layer including the other alloying elements at a same content of the other alloying element as the content of the other alloying element contained in the base material layer.

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