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:
May. 28, 2013
Filed:
Sep. 11, 2007
Applicants:
Kenji Kato, Tokyo, JP;
Katsushige Hayashi, Tokyo, JP;
Noriyuki Kato, Tokyo, JP;
Haruaki Eto, Saitama, JP;
Syoichi Nito, Saitama, JP;
Inventors:
Kenji Kato, Tokyo, JP;
Katsushige Hayashi, Tokyo, JP;
Noriyuki Kato, Tokyo, JP;
Haruaki Eto, Saitama, JP;
Syoichi Nito, Saitama, JP;
Assignees:
MGC Filsheet Co., Ltd., Saitama, JP;
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/02 (2006.01); G02B 5/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a film suitable for improvement of luminance, contrast and view angle of a liquid crystal display. Specifically disclosed is a retardation film having a thickness of 30-500 μm, a light transmittance of not less than 85%, and an Nz factor of not less than 10.