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:
Oct. 14, 2025
Filed:
Sep. 06, 2021
Mitsubishi Heavy Industries Engine & Turbocharger, Ltd., Sagamihara, JP;
Tadaaki Nakamura, Tokyo, JP;
Nobuhiko Saito, Tokyo, JP;
Nobuyoshi Komai, Tokyo, JP;
Keita Hashimoto, Tokyo, JP;
Yuya Konno, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Kanagawa, JP;
Abstract
In this cast austenitic stainless steel, in a cross section when heated at 1000° C., an average number Nc per unit area of carbides having an equivalent circle diameter of 500 nm or larger in a center portion of an austenite crystal grain is 6.0×10particles/μmor more, and, when an average number per unit area of the carbides having an equivalent circle diameter of 500 nm or larger in a vicinity of a grain boundary in an austenite crystal grain is represented as Ngb, Ngb/Nc is 1.3 or less.