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:
Dec. 13, 2022
Filed:
Jun. 12, 2018
Applicant:
Omya International Ag, Oftringen, CH;
Inventors:
Assignee:
OMYA INTERNATIONAL AG, Oftringen, CH;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41M 3/14 (2006.01); B41M 1/30 (2006.01); B41M 1/36 (2006.01); B41M 3/00 (2006.01); B41M 5/323 (2006.01); B41M 5/333 (2006.01);
U.S. Cl.
CPC ...
B41M 3/142 (2013.01); B41M 1/30 (2013.01); B41M 1/36 (2013.01); B41M 3/001 (2013.01); B41M 5/323 (2013.01); B41M 5/3335 (2013.01); B41M 5/3338 (2013.01); B41M 2205/04 (2013.01);
Abstract
The present invention relates to method of manufacturing a tamper-proof medium for thermal printing, wherein a liquid treatment composition comprising at least one acid is deposited on a substrate which comprises a thermochromic coating layer comprising at least one halochromic leuco dye.