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:
May. 24, 1977
Filed:
Aug. 13, 1975
Robert L Saxe, New York, NY (US);
Robert I Thompson, Plainview, NY (US);
Matthew Forlini, Ozone Park, NY (US);
Research Frontiers, Incorporated, Plainview, NY (US);
Abstract
A light valve including suspending materials which have an ability to prevent or substantially retard agglomeration of the particles in suspension during the application of a voltage to the suspension. The materials comprise aromatic esters which are derivable from aromatic alcohols, such as phenyl acetate, cresyl acetate and structurally similar compounds. Other suspending material such as non-aqueous liquids or solids may also form part of the suspending medium of this invention, used to suspend the particles. The suspension also may include a coating material to coat the particles in suspension and act in combination with the suspending materials to prevent or substantially reduce agglomeration of the particles when a voltage is applied to the suspension.