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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.:

US 8940059 B1

PDFFull Text
Expired
Date of Patent:
Jan. 27, 2015

Filed:

Dec. 21, 2010

Azo compound and dye polarizing film containing the same

Applicants:

Yuichi Sadamitsu, Tokyo, JP;

Takahiro Higeta, Tokyo, JP;

Inventors:

Yuichi Sadamitsu, Tokyo, JP;

Takahiro Higeta, Tokyo, JP;

Assignees:

Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;

Polatechno Co., Ltd., Niigata, JP;

Attorney:

Nields, Lemack & Frame, LLC

Primary Examiner:

Tri V Nguyen

Int. Cl.
CPC ...
C09B 31/30 (2006.01); G02B 5/30 (2006.01); C09B 31/22 (2006.01); C09B 31/08 (2006.01); C09B 45/28 (2006.01); C09B 56/08 (2006.01);
U.S. Cl.
CPC ...
C09B 31/22 (2013.01); C09B 31/08 (2013.01); C09B 45/28 (2013.01); C09B 56/08 (2013.01); G02B 5/3033 (2013.01);
Abstract

Disclosed is an azo compound represented by the formula (1) below, a salt thereof, or a copper complex salt compound thereof. (In the formula, R1 and R2 independently represent a hydrogen atom, a sulfonic acid group, a lower alkyl group or a lower alkoxyl group; R3-R6 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxyl group; R7 represents a lower alkyl group or a lower alkoxyl group; and n represents 0 or 1.)

Find Patent Forward Citations

Sadamitsu, Yuichi. (2015). Azo compound and dye polarizing film containing the same (U.S. Patent No. 8940059). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8940059

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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