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:
Mar. 04, 2025
Filed:
Dec. 17, 2021
Applicant:
Société Bic, Clichy, FR;
Inventor:
Myriam Oger, Clichy, FR;
Assignee:
SOCIÉTÉ BIC, Clichy, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43K 29/00 (2006.01); B43K 29/02 (2006.01); B43L 19/00 (2006.01);
U.S. Cl.
CPC ...
B43L 19/0025 (2013.01); B43K 29/02 (2013.01);
Abstract
A friction body for discoloring handwriting written with a thermochromic ink with frictional heat, the friction body including a surface portion configured to generate frictional heat when manually rubbed on a porous substrate. The surface portion may have a thermal effusivity of less than about 300 J Kms.