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:
Apr. 15, 2014
Filed:
Jan. 24, 2011
Shinichi Suzuki, Toukai, JP;
Toshimasa Tomokiyo, Toukai, JP;
Shuuji Souma, Toukai, JP;
Katsuji Nakashima, Toyota, JP;
Masashi Ozawa, Toyota, JP;
Kiyohito Kondou, Toyota, JP;
Shinichi Suzuki, Toukai, JP;
Toshimasa Tomokiyo, Toukai, JP;
Shuuji Souma, Toukai, JP;
Katsuji Nakashima, Toyota, JP;
Masashi Ozawa, Toyota, JP;
Kiyohito Kondou, Toyota, JP;
Aisin Takaoka Co., Ltd., Toyota-shi, JP;
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Abstract
The high-strength quenched formed body contains a layer, in which Zn is a major component and which is formed of Fe: 30% by mass or less, in an amount of 30 g/mor more on the surface of an after-quenching formed-body steel material, and accordingly is good in corrosion resistance. A quenched formed body is produced by quenching a zinc-plated steel material, which includes a zinc-plated layer which contains each of Al and Si having alloying-retarding function and readily-oxidizing function independently or compositely, in an amount of 0.15% by mass or more, after heating it to 800° C. or more and 950° C. or less in an oxidizing atmosphere of oxygen: 0.1% by volume or more.