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:
Aug. 12, 2025
Filed:
Jul. 11, 2023
Applicant:
Neturen Co., Ltd., Tokyo, JP;
Inventors:
Takuya Suzuki, Tokyo, JP;
Masahiro Tsukahara, Tokyo, JP;
Osamu Idohara, Tokyo, JP;
Setsuo Takaki, Tokyo, JP;
Assignee:
Neturen Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 20/02 (2006.01); B23K 20/00 (2006.01); B23K 20/22 (2006.01); B23K 103/04 (2006.01);
U.S. Cl.
CPC ...
B23K 20/026 (2013.01); B23K 20/00 (2013.01); B23K 20/22 (2013.01); B23K 2103/04 (2018.08);
Abstract
A steel joined body includes a plurality of steels joined together, the plurality of steels including a joint interface having a carbon concentration of 0.20 mass % or more and 2.10 mass % or less, and the steel joined body including a concentration gradient layer having a carbon concentration decreasing with distance from the joint interface.