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. 12, 2011
Filed:
Jun. 12, 2008
Yven Rohlfing, Munich, DE;
Udo Weigand, Munich, DE;
Manfred Melzig, Wessling, DE;
Rodenstock GmbH, Munich, DE;
Abstract
A photochromic plastic object which is composed of a transparent polymeric synthetic resin material, into or onto which at least one substantially mesoporous inorganic host structure is introduced or applied containing one or more embedded organic photochromic dye molecules so as to form a photochromic nanocomposite material. In contrast to prior techniques of adding or applying the photochromic organic dyes to the monomer mixture or prepolymer of a transparent synthetic resin material in a molecular form, in the photochromic plastic article of the present invention color is generated by using the photochromic nanocomposite particles or photochromic nanocomposite structures.