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:
Mar. 26, 2019
Filed:
May. 12, 2014
Fasver, Baillargues, FR;
Eric Philippe, Eyguieres, FR;
Laurence Bes, Jacou, FR;
FASVER, Baillargues, FR;
Abstract
A method for the secure protection of a portion of the surface of an official document bearing markings, in which: a transparent security layer () is selected, the layer including at least one semi-transparent printed image including at least one transparent binder and at least one thermochromic pigment (); the semi-transparent printed image reveals at least one semi-transparent visible pattern in a first non-activated state at least a first temperature, such that the markings can be seen through the image, the pattern not being visible in a second activated state at least a second temperature different from the first temperature. A device for the secure protection of a portion of the surface of an official document and such an official document are also described.