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:
Nov. 24, 1992
Filed:
Aug. 07, 1991
Applicant:
Inventors:
Ryojiro Akashi, Otsu, JP;
Takashi Taniguchi, Yasu, JP;
Assignee:
Toray Industries, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544 71 ;
Abstract
A novel photochromic compound and a polymer comprising the photochromic compound are disclosed. The novel photochromic compound of the present invention is a spirooxazine compound having an addition polymerizable organic functional group or a ring-opening polymerizable organic functional group therein.
Akashi, Ryojiro. (1992). Photochromic compound (U.S. Patent No. 5166345). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5166345
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile