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:
Dec. 14, 2010
Filed:
Sep. 22, 2005
Satoshi Kawamoto, Ichihara, JP;
Masumi Saruwatari, Nagoya, JP;
Satoshi Kawamoto, Ichihara, JP;
Masumi Saruwatari, Nagoya, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
In an optical compensation film, when a direction that gives the maximum in-plane refractive index is X axis, an in-plane direction perpendicular to X axis is Y axis, a film thickness direction is Z axis, refractive indexes at the wavelength of 590 nm in each axis direction are n, n, and nrespectively, and the film thickness is d, an in-plane retardation value defined as R=(n−n)·d and a thickness direction retardation value defined as Rth=|(n+n)/2−n|·d, both of which are measured under conditions at 23 degrees centigrade and a relative humidity of 50%, satisfy the inequalities of Rth/R≧5 and R≦9.5 (nm).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile