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. 11, 2001
Filed:
Oct. 05, 1998
Applicant:
Inventors:
Dietrich Demus, Halle, DE;
Ryokichi Tarao, Chiba, JP;
Hiroyuki Takeuchi, Ichihara, JP;
Kazutoshi Miyazawa, Ichihara, JP;
Assignee:
Chisso Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 1/902 ; G02F 1/13 ; G11B 5/02 ;
U.S. Cl.
CPC ...
C09K 1/902 ; G02F 1/13 ; G11B 5/02 ;
Abstract
Devices useful for storage of information which comprises mixtures of suitable chiral materials with nematic liquid crystals and in which by irradiation with light of two different wavelengths the chirality of the mixture can be reversibly switched between two stable states of different chirality, corresponding to two states of different optical properties.