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. 11, 2013
Filed:
Feb. 28, 2011
Oliver Mueller-marc, Appenzell, CH;
Frank Bartels, Hattingen, DE;
Karlheinz Blankenbach, Pforzheim, DE;
Juergen Rawert, Neuss, DE;
Andriy Bitman, Dortmund, DE;
Dieter Jerosch, Bad Soden, DE;
Oliver Mueller-Marc, Appenzell, CH;
Frank Bartels, Hattingen, DE;
Karlheinz Blankenbach, Pforzheim, DE;
Juergen Rawert, Neuss, DE;
Andriy Bitman, Dortmund, DE;
Dieter Jerosch, Bad Soden, DE;
Advanced Display Technology AG, Appenzell, CH;
Abstract
The invention relates to a security element including at least one display element for non-resettable visible display of information, wherein said display element comprises a first and a second volume which are fluidically connected via at least one duct, and only one electrically controllable electrode which is associated to one of said volumes and is configured, when charged with an electric voltage, to vary the surface tension of a liquid which is present in said associated volume, wherein said liquid comprises at least an electrically conducting and/or polar and a non-polar fraction, and at least said electrically conducting fraction being completely and in a stable manner provided in that of both volumes which is not associated with an electrode and wherein said electrically conducting and/or polar fraction may be moved irreversibly and at least partly due to a single charging of the electrode into the volume which is associated with an electrode.