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. 25, 2026
Filed:
Apr. 06, 2023
Ecole Polytechnique Federale DE Lausanne (Epfl), Lausanne, CH;
ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL), Lausanne, CH;
Abstract
A data storage medium () comprising a stacked plurality of layers (), each layer composed of a layer material selected from a group comprising at least two different dielectric materials, adjacent layers being formed of different materials, and at least one of the layers, that is not a top layer, constituting an information layer () configured to be modified locally by energy from an electromagnetic beam () having a specific beam wavelength and a propagation direction (Z) transverse to the layers. The stacked plurality of layers include an aperiodic layer arrangement including at least three stacked adjacent layers having different thicknesses with respect to each other.