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:
Jan. 16, 2001
Filed:
Dec. 24, 1997
Khan Ir Gvon, Dolgoprudniy, RU;
Yuri A. Bobrov, Moscow, RU;
Victor A. Bykov, Moscow, RU;
Leonid Y. Ignatov, Moscow, RU;
Tatiana D. Ivanova, Moscow, RU;
Sergei I. Popov, Moscow, RU;
Elena Y. Shishkina, Moscow, RU;
Georgiy N. Vorozhtsov, Moscow, RU;
Optiva, Inc., South San Francisco, CA (US);
Abstract
Polarizing coatings are formed from dyestuffs which provide a stable liquid crystalline phase in a wide range of concentrations, temperatures and pH-values. Particles formed by aggregates of the liquid crystal molecules are oriented in a predetermined direction to polarize light. The stability of the liquid crystalline state allows orienting the particles by mechanical forces such as a shearing force applied when the liquid crystal (,) is spread on a support surface (,) by a knife-like doctor (,) or a tension deformation force acting on the meniscus of the liquid crystal deposited between two surfaces (,) as the surfaces are peeled off one another. As a result, the polarizing coatings are formed in some embodiments by simple methods. In some embodiments, the polarizing coatings have a high lightfastness, a high thermal stability, and a high dichroic ratio.