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:
Oct. 17, 2023
Filed:
Jul. 30, 2019
Applicant:
Societe Bic, Clichy, FR;
Inventors:
Guillaume Caffier, Wegscheid, FR;
Aurore Sauvage, Gy les Nonains, FR;
Assignee:
SOCIETE BIC, Clichy, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43L 19/00 (2006.01); C08K 5/18 (2006.01); C08L 23/16 (2006.01); B43K 29/02 (2006.01); C08K 3/22 (2006.01); C08K 3/26 (2006.01); C09D 11/50 (2014.01); C08L 71/02 (2006.01);
U.S. Cl.
CPC ...
B43L 19/0025 (2013.01); B43K 29/02 (2013.01); C08K 3/22 (2013.01); C08K 3/26 (2013.01); C08K 5/18 (2013.01); C08L 23/16 (2013.01); C09D 11/50 (2013.01); C08K 2003/2241 (2013.01); C08K 2003/265 (2013.01); C08L 71/02 (2013.01);
Abstract
There is an erasing tool having a polyetheramine for erasing a thermochromic ink composition capable of undergoing a color change that cannot be reversed by application of a temperature change. There also is a writing instrument having a thermochromic ink composition and an erasing tool. Finally, there is a method for irreversibly erasing a written line made with a thermochromic ink composition and erased with an erasing tool.