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:
Nov. 11, 2025
Filed:
May. 28, 2021
Jfe Steel Corporation, Tokyo, JP;
Keisuke Yoshida, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
A surface inspection device of a metal strip includes: a first light source unit configured to emit light to a surface of a metal strip; a first imaging unit configured to image regular reflection light on the surface by emission light from the first light source unit; a second light source unit configured to emit light of a wavelength band different from the first light source unit to the surface; a second imaging unit configured to image irregular reflection light on the surface by emission light from the second light source unit; and a surface defect distinguishing unit configured to distinguish a surface defect by using the regular reflection light and irregular reflection light. The emission light from the first light source unit and the emission light from the second light source unit are simultaneously applied to a same place on the surface of the metal strip.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile