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. 01, 2019
Filed:
Apr. 03, 2015
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
A method of production of a welded structure by butt welding two steel sheets () by laser welding () while supplying assist gas () to a back surface of a melt pool (), whereby it is possible to prevent formation of a through hole in the melt part (), characterized in that a thickness of at least one steel sheet () of the two steel sheets () is 0.6 mm or less, the assist gas () is a mixed gas () containing 10 to 50 vol % of Ogas, and, when an Oconcentration in the mixed gas () is C (vol %), a flow rate L of mixed gas () (liter/min) satisfies(liter/min)−C(vol %)×1 (liter/min/vol %)≤L (liter/min)<40 (liter/min).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile