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. 23, 2007
Filed:
Dec. 12, 2002
Qing Wei Zhou, Tokyo, JP;
Jun Fujiwara, Tokyo, JP;
Koji Yamabe, Saitama, JP;
Ayumu Inoue, Saitama, JP;
Qing Wei Zhou, Tokyo, JP;
Jun Fujiwara, Tokyo, JP;
Koji Yamabe, Saitama, JP;
Ayumu Inoue, Saitama, JP;
Kokusai Gijutsu Kaihatsu Co. Ltd., Tokyo, JP;
Mitsui Mining & Smelting Co. Ltd., Tokyo, JP;
Abstract
A surface of copper foil wound onto a guide rolleris irradiated with light. Specular light from the copper foil surface is received by CCD camerasand scattered light from the copper foil surface is received by CCD camerasWhen, in a region in which the amount of specular light received by the CCD camerasis equal to or larger than a first threshold, a portion having a luminance equal to or larger than a second threshold is present, and when the amount of scattered light received by the CCD camerasis smaller than a luminance average, that region is determined to be a defective copper portion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile