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. 15, 2013
Filed:
Jul. 19, 2010
Chen-kuei Chung, Tainan County, TW;
Meng-yu Wu, Taichung, TW;
En-jou Hsiao, Yunlin County, TW;
Shih-lung Lin, Changhua County, TW;
Chen-Kuei Chung, Tainan County, TW;
Meng-Yu Wu, Taichung, TW;
En-Jou Hsiao, Yunlin County, TW;
Shih-Lung Lin, Changhua County, TW;
National Cheng Kung University, Tainan, TW;
Abstract
The present invention relates to a COlaser-transparent material having a mark on the surface thereof and the method for making the same. The method includes the following steps: providing a first substrate, which has a top surface and a bottom surface; providing a second substrate which has a top surface; putting the bottom surface of the first substrate on the top surface of the second substrate; irradiating a COlaser beam to the top surface of the second substrate by passing through the top surface and the bottom surface of the first substrate; and forming a mark on the bottom surface of the first substrate. The material of the mark is oxide of the second substrate or the same as the material of the second substrate. Whereby the cheap COlaser is utilized to form the mark on the first substrate, and the mark can be erased easily by a proper chemical for recycling the first substrate.