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:
Jul. 21, 2009
Filed:
May. 14, 2007
Applicants:
Chih-hung Wu, Taoyuan County, TW;
Hung-sheng Chiu, Taoyuan County, TW;
Kai-sheng Chang, Taoyuan County, TW;
Kuan-yu Chu, Taoyuan County, TW;
Inventors:
Chih-Hung Wu, Taoyuan County, TW;
Hung-Sheng Chiu, Taoyuan County, TW;
Kai-Sheng Chang, Taoyuan County, TW;
Kuan-Yu Chu, Taoyuan County, TW;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A wafer clamp according to the present invention always firmly clamps a wafer. A supporting arm of the wafer clamp will be replaced with a different one according to the wafer size. Moreover, with a larger area of the supporting arm, a wear resistance and a smoothness of the wafer is improved. Besides, the wafer clamp stops the wafer from slipping. Hence, the present invention has a simple structure, a good practicality and a wide application.