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. 12, 1989
Filed:
Feb. 03, 1987
Applicant:
Inventors:
Manfred Eich, Frankfurt, DE;
Joachim Wendorff, Nauheim, DE;
Assignee:
Rohm GMBH Chemische Fabrik, Darmstadt, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; G02F / ;
U.S. Cl.
CPC ...
430 20 ; 430 19 ; 430-1 ; 2522996 ; 25229964 ; 25229966 ; 25229967 ; 25229968 ; 3503 / ; 428-1 ;
Abstract
The invention relates to a device for reversible optical information storage, which comprises polymeric liquid crystals as a storage medium. The device contains a film comprised of a liquid crystal main chain polymer, as a storage medium, and is constructed so that in the storage operation the storage medium is locally reoriented, and the information is stored by means of a local variation of the molecular ordering.