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. 18, 2017
Filed:
Aug. 12, 2013
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Mgc Filsheet Co., Ltd., Saitama, JP;
Takuya Gotou, Ibaraki, JP;
Kazuhisa Mitsuhata, Tokyo, JP;
Kyousuke Nakamura, Chiba, JP;
Masatoshi Nakashima, Saitama, JP;
MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo, JP;
MGC FILSHEET CO., LTD., Saitama, JP;
Abstract
Eyewear uses a polarizing lens obtained by bending a multilayer polarizing sheet in which a sheet (A) including at least 50% by mass of an aromatic polycarbonate resin and having a retardation value of 2000 nm or less at a wavelength of 600 nm is layered on one side of a polarizing film, and a sheet (B) including a special polycarbonate resin obtained by carbonate bonding a dihydroxy compound through use of a carbonic acid diester, the polycarbonate resin being a compound in which 70-100 mol % of the dihydroxy compound is represented by general formula (1), is layered on the other side of the polarizing film. (In general formula (1), Rand Rare each independently a hydrogen atom, a C-Calkyl group, or the like. In general formula (1), X are each independently a C-Calkylene group or the like.)