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:
Aug. 10, 2004
Filed:
Sep. 26, 2001
Satoshi Sanada, Tokyo, JP;
Masayuki Hatano, Tokyo, JP;
Tokyo Magnetic Printing Co., Ltd., Tokyo, JP;
Abstract
A reversible information liquid crystal display medium is disclosed which is capable of long term information display, even through extremes of heat and pressure, without the addition of energy to maintain the display. A primary ingredient of the liquid crystal display medium is a liquid crystalline composition of high-molecular liquid crystal in which molecules that can function as a liquid crystal are chemically bound to side chains of a high-molecular polymer skeleton through a flexing group. Low-molecular liquid crystal may be added to the liquid crystalline composition in order to reduce the response speed of the liquid crystalline composition. The liquid crystal display medium may be used in the display portion of a contactless integrated circuit (IC) card.