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. 24, 2017
Filed:
Apr. 28, 2014
Applicants:
Tsinghua University, Beijing, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Inventors:
Zhen-Dong Zhu, Beijing, CN;
Qun-Qing Li, Beijing, CN;
Ben-Feng Bai, Beijing, CN;
Shou-Shan Fan, Beijing, CN;
Assignees:
Tsinghua University, Beijing, CN;
HON HAI PRECISION INDUSTRY CO., LTD., New Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/18 (2006.01);
U.S. Cl.
CPC ...
G02B 5/1809 (2013.01); G02B 5/1857 (2013.01);
Abstract
A hollow-structure metal grating is provided. The hollow-structure metal grating includes a substrate, a number of connecting metal layers, and a number of hollow metal protrusions spaced and located on a surface of the substrate. A space is defined between each of the number of hollow metal protrusions and the substrate.