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. 05, 2016
Filed:
Nov. 26, 2013
Applicant:
Francotyp-postalia Gmbh, Birkenwerder, DE;
Inventors:
Thomas Gerhardt, Berlin, DE;
Wolfgang Muhl, Hohen Neuendorf, DE;
Assignee:
Fracotyp-Postalia GmbH, Birkenwerder, DE;
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/84 (2006.01); C09J 11/06 (2006.01); C09J 11/08 (2006.01); B43M 5/00 (2006.01); B43M 7/00 (2006.01); G09F 3/03 (2006.01); G07B 17/00 (2006.01);
U.S. Cl.
CPC ...
G01N 21/84 (2013.01); B43M 5/00 (2013.01); B43M 7/00 (2013.01); C09J 11/06 (2013.01); C09J 11/08 (2013.01); G07B 17/00193 (2013.01); G09F 3/03 (2013.01);
Abstract
A sealing liquid for sealing mail pieces contains water and a penetration agent. The sealing liquid is applied by letter-closing devices and franking machines containing such a sealing liquid. Once sealed, the opening of the letter produces a pronounced pattern so that it is clear that the letter has been opened. Therefore any attempts to reseal the once opened enveloped are easily detected.