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. 24, 2016
Filed:
Sep. 26, 2013
Ngk Insulators, Ltd., Nagoya-shi, Aichi, JP;
Kenji Kato, Handa, JP;
Kenji Isaka, Nagoya, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
Provided is a method for marking on a pressed metallic component whose visibility and corrosion resistance in a marking target is ensured. The method includes a step of irradiating a base treatment target region including a marking target region with a laser beam on a first irradiation condition, and a step of irradiating the marking target region with the laser beam on a second irradiation condition, in which a charged energy of the laser beam is set to be smaller on the first irradiation condition than the second irradiation condition, thereby providing between the marking pattern and a non-irradiation region, a base region having a residual stress greater than that of the non-irradiation region and a residual stress smaller than that of the marking pattern, so as to ensure a visibility. Furthermore, a corrosion resistance is ensured by using a metallic member which is heat-treated to enhance the hardness.