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:
May. 30, 2023
Filed:
Oct. 30, 2018
Applicant:
Sumitomo Electric Sintered Alloy, Ltd., Okayama, JP;
Inventors:
Assignee:
SUMITOMO ELECTRIC SINTERED ALLOY. LTD., Takahashi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 26/08 (2014.01); B23K 26/18 (2006.01); B41M 5/26 (2006.01); B23K 26/082 (2014.01); B23K 26/359 (2014.01); B23K 26/352 (2014.01); B22F 3/24 (2006.01); B23K 26/06 (2014.01); B23K 103/02 (2006.01);
U.S. Cl.
CPC ...
B41M 5/262 (2013.01); B22F 3/24 (2013.01); B23K 26/0665 (2013.01); B23K 26/082 (2015.10); B23K 26/359 (2015.10); B23K 26/3576 (2018.08); B22F 2003/245 (2013.01); B23K 2103/02 (2018.08);
Abstract
A method for laser-marking an iron-based sintered body includes a first step of forming with a first laser beam a plurality of dotted recesses with a predetermined depth in an identification mark area of a surface of an iron-based sintered body, and a second step of flattening with a second laser beam the surface within the identification mark area other than the dotted recesses. The first laser beam has an irradiation energy per unit area greater than an irradiation energy per unit area of the second laser beam.