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. 25, 2012
Filed:
Apr. 09, 2012
Applicants:
Tatsuya Ishida, Tokyo, JP;
Koichi Shigeno, Tokyo, JP;
Inventors:
Tatsuya Ishida, Tokyo, JP;
Koichi Shigeno, Tokyo, JP;
Assignee:
Adeka Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/23 (2006.01); G02F 1/1335 (2006.01); C04B 33/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical filter containing at least a clay mineral complex (A). The clay mineral complex (A) comprises a layered clay mineral (B) intercalated with a dye cation (C), and an organic cation (D).