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:
Apr. 27, 1993
Filed:
Apr. 10, 1991
Applicant:
Inventors:
Claus Escher, Muhltal, DE;
Gerhard Illian, Frankfurt am Main, DE;
Norbert Rosch, Frankfurt am Main, DE;
Takamasa Harada, Inzai, JP;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; C09K / ; C09K / ; C09K / ;
U.S. Cl.
CPC ...
359100 ; 359104 ; 25229901 ; 2522994 ; 2522995 ;
Abstract
Addition of coronands and cryptands to FLC-mixtures makes it possible to bring the FLC material into a homogeneous 'bookshelf' or 'quasi-bookshelf' geometry. When such a FLC mixture is used, displays which have been shock-damaged can be regenerated by applying a suitable electric field for a short period of time.