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:
Jun. 28, 2011
Filed:
Jan. 11, 2007
Applicants:
Hoi-sing Kwok, Hong Kong, CN;
Xing-jie Yu, Hong Kong, CN;
Inventors:
Hoi-Sing Kwok, Hong Kong, CN;
Xing-Jie Yu, Hong Kong, CN;
Assignee:
The Hong Kong University of Science and Technology, Hong Kong, SAR, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention pertains to the design and construction of retardation films (or plates) with any targeted dispersive property, including those with no wavelength dependence for the entire visible range. In particular, this invention deals with specific design of films with broadband (achromatic) quarterwave and halfwave retardation.