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. 02, 2024
Filed:
May. 05, 2021
Applicant:
Omya International Ag, Oftringen, CH;
Inventors:
Roger Bollström, Zofingen, CH;
Philipp Hunziker, Loveland, OH (US);
Patrick A. C. Gane, Rothrist, CH;
Assignee:
Omya International AG, Oftringen, CH;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41M 3/14 (2006.01); B42D 25/29 (2014.01); B42D 25/30 (2014.01); B42D 25/355 (2014.01); B42D 25/36 (2014.01); B42D 25/378 (2014.01); D21H 19/82 (2006.01); D21H 21/40 (2006.01); D21H 21/42 (2006.01); D21H 21/44 (2006.01); D21H 21/48 (2006.01); G07D 7/12 (2016.01); G07D 7/1205 (2016.01);
U.S. Cl.
CPC ...
D21H 21/42 (2013.01); B41M 3/14 (2013.01); B42D 25/29 (2014.10); B42D 25/30 (2014.10); B42D 25/355 (2014.10); B42D 25/36 (2014.10); B42D 25/378 (2014.10); D21H 19/82 (2013.01); D21H 21/40 (2013.01); D21H 21/44 (2013.01); D21H 21/48 (2013.01); G07D 7/12 (2013.01); G07D 7/1205 (2017.05);
Abstract
The present invention relates to a method of tagging a substrate with a covert, spectroscopically detectable security feature, wherein a liquid treatment composition comprising at least one acid is deposited onto a substrate, which comprises at least one external surface comprising a salifiable alkaline or alkaline earth compound.