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. 15, 2008
Filed:
Mar. 19, 2004
Applicants:
Mun Cheol Paek, Daejeon-Shi, KR;
Dong Woo Suh, Daejeon-Shi, KR;
Ho Jun Ryu, Seoul, KR;
Hyeon Bong Pyo, Daejeon-Shi, KR;
Yong Woo Park, Daejeon-Shi, KR;
Inventors:
Mun Cheol Paek, Daejeon-Shi, KR;
Dong Woo Suh, Daejeon-Shi, KR;
Ho Jun Ryu, Seoul, KR;
Hyeon Bong Pyo, Daejeon-Shi, KR;
Yong Woo Park, Daejeon-Shi, KR;
Assignee:
Electronics and Telecommunications Research Institute, Daejeon-Shi, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D 11/00 (2006.01); G02B 6/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided are a stamper fabricated by using an embossing master and a focusing grating coupler fabricated by using the stamper, which is applicable to a subminiature pickup head for a mobile optic disk, whereby it is possible to reduce a weight and a volume of the pickup head with a simple process and low cost and to apply for mass production.