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:
Jun. 23, 2015
Filed:
Sep. 13, 2012
Applicants:
Ryuichi Kawatake, Aiko-gun, JP;
Takashi Maruyama, Aiko-gun, JP;
Inventors:
Ryuichi Kawatake, Aiko-gun, JP;
Takashi Maruyama, Aiko-gun, JP;
Assignee:
NHK SPRING CO., LTD., Yokohama-shi, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 8/12 (2006.01); C23C 8/14 (2006.01); G11B 5/48 (2006.01); C23C 8/02 (2006.01); C21D 1/76 (2006.01); C21D 6/00 (2006.01); C21D 9/00 (2006.01); C21D 1/26 (2006.01); C21D 1/74 (2006.01);
U.S. Cl.
CPC ...
C23C 8/14 (2013.01); G11B 5/4833 (2013.01); C23C 8/02 (2013.01); C21D 1/76 (2013.01); C21D 6/004 (2013.01); C21D 9/0068 (2013.01); C21D 1/26 (2013.01); C21D 2211/001 (2013.01);
Abstract
A method of manufacturing a metal part according to the present invention includes heating a shaped product of stainless steel to 600° C. or more in an oxygen-free atmosphere and heat-treating the shaped product in an oxygen atmosphere after the heating.