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. 09, 2013
Filed:
Mar. 26, 2010
Alejandro Jose Martinez Abietar, Valencia, ES;
Carlos Garcia Meca, Valencia, ES;
Javier Marti Sendra, Valencia, ES;
Alejandro Jose Martinez Abietar, Valencia, ES;
Carlos Garcia Meca, Valencia, ES;
Javier Marti Sendra, Valencia, ES;
Universitat Politecnica de Valencia, Valencia, ES;
Abstract
The invention relates to an optical security mark that can be applied to an object, said mark comprising a structure made of a metamaterial that generates a magnetic response to incident radiation having a wavelength (λ) corresponding to a specific code of formula μr(λ) where μr is the relative magnetic permeability of the metamaterial and λ is a wavelength of the incident radiation having a value of between 15 nm and 1100 nm, or a specific code of formula λ(μr) or combinations of said codes. Said mark has a first tranverse dimension bx in a first transverse extension of the metamaterial and a second transverse dimension by in a second transverse extension of the metamaterial, different from the first transversal dimension, the first transverse dimension and the second transverse dimension each being at least equal to the wavelength (λ) of the incident radiation.