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:
Sep. 29, 2026
Filed:
May. 16, 2023
Applicant:
Sintokogio, Ltd., Nagoya, JP;
Inventors:
Yuta Saito, Nagoya, JP;
Yuji Kobayashi, Nagoya, JP;
Assignee:
SINTOKOGIO, LTD., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 26/356 (2014.01); B23K 26/00 (2014.01); B23K 26/073 (2006.01);
U.S. Cl.
CPC ...
B23K 26/356 (2015.10); B23K 26/0006 (2013.01); B23K 26/0732 (2013.01);
Abstract
A method for machining a tool includes applying compressive residual stress to the tool by laser peening using a pulsed laser. The tool includes a base material and a coating layer that covers at least a portion of a surface of the base material. In the applying, the compressive residual stress is applied to the tool such that a difference in compressive residual stress at an interface between the base material and the coating layer is at most 100 MPa.