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:
Nov. 07, 2023
Filed:
Nov. 18, 2019
Societe Bic, Clichy, FR;
Universite DE Haute Alsace, Mulhouse, FR;
Centre National DE LA Recherche Scientifique (C.n.r.s.), Paris, FR;
Karine Mougin, Valdieu-Lutran, FR;
Feriel Ghellal, Belfort, FR;
Arnaud Spangenberg, Flaxlanden, FR;
Romain Metillon, Combs la Ville, FR;
Olivier Albenge, Mortcerf, FR;
SOCIETE BIC, Clichy, FR;
UNIVERSITE DE HAUTE ALSACE, Mulhouse, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S.), Paris, FR;
Abstract
There is a process for preparing in situ an aqueous gel ink with variable color having the following steps: There also is an aqueous gel ink with variable color obtained according to the process of the disclosure, having a reducing agent, metallic nanoparticles and iron powder. There further is a writing instrument having an aqueous gel ink with variable color according to the disclosure.