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:
Aug. 06, 2013
Filed:
Sep. 22, 2009
Suruliappa Gowder Jeganathan, Chadds Ford, PA (US);
Neil Colin William Forsythe, Landenberg, PA (US);
Vincent Livoti, Hopewell Junction, NY (US);
Walter Taplin, Hockessin, DE (US);
Suruliappa Gowder Jeganathan, Chadds Ford, PA (US);
Neil Colin William Forsythe, Landenberg, PA (US);
Vincent Livoti, Hopewell Junction, NY (US);
Walter Taplin, Hockessin, DE (US);
BASF SE, Ludwigshafen, DE;
Abstract
A multi color, photoactive, color changing plastic, coating or ink, composition comprising both a photochromic material and a photosensitive chromogenic system is provided which will undergo a sequence of color changes upon exposure to ultraviolet radiation. Also provided is an ultraviolet indicator or dosimeter comprising the color changing composition.