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. 06, 1993
Filed:
Aug. 26, 1991
Applicant:
Inventors:
Virginia Piermattie, Pittsburgh, PA (US);
Sharon J Elliot, Hempfield Township, Westmoreland County, PA (US);
Assignee:
Aristech Chemical Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; G02F / ;
U.S. Cl.
CPC ...
25229901 ; 428-1 ; 359103 ;
Abstract
Polymer dispersed liquid crystals are made by mixing liquid crystals into a syrup of polymethylmethacrylate dissolved in polymerizable monomers comprising methyl methacrylate, and polymerizing to monomers, to obtain finely dispersed micelles of liquid crystals which change refractive index in response to an electric field.