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. 16, 1991
Filed:
Feb. 26, 1990
Applicant:
Inventors:
Eiichi Kobayashi, Kashiwa-shi, Chiba, JP;
Toyoshi Ohashi, Chiba, JP;
Mitsutaka Miyabayashi, Mie, JP;
Assignees:
Other;
Mitsubishi Petrochemical Co., Ltd., Yokkaichi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430271 ; 430945 ; 430 18 ; 430 21 ; 430286 ; 346 / ; 3461351 ; 346 / ; 528375 ; 528376 ;
Abstract
An optically functional element comprising an aromatic vinylene sulfide polymer as an optically changing element is disclosed. The optically functional element undergoes optical changes with low energy at a high rate to provide high contrast before and after the optical changes.