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:
Jul. 06, 2021
Filed:
Feb. 20, 2017
Fraunhofer-gesellschaft Zur Förderung Der Angewandten Forschung E.v., Munich, DE;
Ohb System Ag, Bremen, DE;
Wolfgang Schade, Goslar, DE;
Günter Flachenecker, Hannover, DE;
Markus Thiel, Goslar, DE;
Rainer Rathje, Lilienthal, DE;
Christian Gorecki, Bremen, DE;
Andreas Thoma, Bremen, DE;
Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V., Munich, DE;
OHB System AG, Bremen, DE;
Abstract
The invention relates to a seal containing a substrate which can be applied to an object to be sealed, so that said seal is changed when it is removed without authorization, wherein the substrate contains or comprises a polymer and/or a glass and at least one optical waveguide is arranged in the substrate, at least one first Bragg grating being arranged in said optical waveguide, wherein the substrate has a thickness of less than 200 μm. The invention further relates to a system having a seal of this kind and having an evaluation device, and also to a sealing method.