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:
Jun. 13, 2023
Filed:
Dec. 16, 2020
National Research Council of Canada, Ottawa, CA;
Bank of Canada, Ottawa, CA;
Daniel Brassard, Longueuil, CA;
Lidija Malic, Saint Leonard, CA;
Keith J. Morton, St-Bruno-de-Montarville, CA;
Teodor Veres, Montreal, CA;
Charles D. MacPherson, Santa Barbara, CA (US);
Theodoros Garanzotis, Ottawa, CA;
National Research Council of Canada, Ottawa, CA;
Bank of Canada, Ottawa, CA;
Abstract
A security device that exhibits at least one dynamic response upon change of orientation of the security device with respect to gravity, wherein the security device includes a hollow capsule completely filled with a liquid and one or more microscopic elements. In addition, the dynamic response continues after cessation of the change of orientation with respect to gravity. The dynamic response includes a transition of the one or more microscopic elements from substantial mechanical equilibrium to non-equilibrium upon action of the change of orientation with respect to gravity and back to substantial mechanical equilibrium after cessation of the change of orientation with respect to gravity. During the dynamic response, the one or more microscopic elements undergo at least one of a rotational motion and a translational motion relative to the liquid.