Fabrica Nacional De Moneda Y Timbre-real Casa De La Moneda

Consejo Superior De Investigaciones Cientificas

Nanogap Sub-nm Powder, Sociedad Anonima

Vicente Garcia Juez

Manuel Arturo Lopez Quintela

Javier Gamo Aranda

Miguel Angel Rodriguez Barbero

Jose Francisco Fernandez Lozano

Maurizio Lazzerini

Juan José Romero Fanego

Javier Baraja Carracedo

Juan Jose Romero Fanego

Carlos Garcia Cuadrado

Antonio Olmos

The present invention relates to the use of non-deactivatable security compositions comprising the combination of at least two types of particles of oxide materials, where said particles have a different size and/or morphology, and where the inorganic oxide materials have at least one transition metal or one lanthanide element, and radiofrequency wave absorption properties. The invention also relates to security articles, documents or elements incorporating these compositions, as well as to a method and to a system for detection thereof.

Use of radiofrequency wave absorbing markets for the authentication of security documents

A security document () comprises a paper document substrate () and a security element () embedded in said document substrate (). The security element comprises an element substrate () and a material () sensitive to laser light. The method comprises the step of directing laser light () onto the document substrate () so as to alter said material (), so as to provide said security element () with a detectable marking ().

Method of providing a security document with a security feature, and security document

The present invention relates to the use of nanosystems as non deactivable security markers comprising metal atomic quantum clusters (AQCs) of at least two different size distributions encapsulated in a cavity with an inner diameter less than or equal to approximately 10 nm. These nanosystems are luminescence, particularly fluorescence after external excitation. The invention also relates to security documents, articles or elements incorporating these markers as well as to a method and a system for detecting the same.

Use of luminescent nanosystems for authenticating security documents

The present invention relates to the use of nanocompounds as non deactivable security markers comprising a charge-transfer complex of at least two different size metal atomic quantum clusters (AQCs). These nanocompounds are luminescent, particularly fluorescent after external excitation. The invention also relates to security documents, articles or elements incorporating these markers as well as to a method and a system for detecting the same.

Use of luminescent nanocompounds for authenticating security documents

The invention consists in a security paper, as well as the security document obtained with it and the manufacturing process thereof, that combines the security elements called windowed thread with the high contrast single-tone watermark technique. In order to carry out this invention, we make use of the recesses created to cover the thread in the areas where it is visible, which exhibit a greater accumulation of fibers and are therefore opaque areas in the final paper, to insert therein the electrotype or high contrast single-tone watermarks.

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Madrid, Spain

Vicente Garcia Juez