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. 11, 2010
Filed:
Apr. 30, 2004
Matthias Kuntz, Seeheim-Jugenheim, DE;
Burkhard Krietsch, Dieburg, DE;
Andreas Walter, Oberursel, DE;
Matthias Kuntz, Seeheim-Jugenheim, DE;
Burkhard Krietsch, Dieburg, DE;
Andreas Walter, Oberursel, DE;
Merck Patent GmbH, Darmstadt, DE;
Abstract
The invention relates to a flat dual security feature which comprises two different security components, one of which can be verified in the visible spectral region and one of which can be verified in the ultraviolet spectral region of light, and which comprises flake-form effect pigments and luminescent pigments in such a low concentration that the latter are evident to the naked eye as individual particles under the action of UV light; to a process for the production thereof, and to the use thereof.