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. 04, 2025
Filed:
Oct. 04, 2021
Applicant:
Société Bic, Clichy, FR;
Inventor:
Carine Bethouart, Clichy, FR;
Assignee:
SOCIÉTÉ BIC, Clichy, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/00 (2014.01); C09D 11/16 (2014.01);
U.S. Cl.
CPC ...
C09D 11/16 (2013.01);
Abstract
The present invention concerns a washable aqueous ink composition comprising: a) at least one alkali metal salt of citrate, b) at least one cyclodextrin or derivative thereof, c) at least one dye. It also concerns a writing instrument comprising it and the use of the association of a) at least one alkali metal salt of citrate and b) at least one cyclodextrin or derivative thereof, to improve the washability and/or vividness of the shades of a washable aqueous ink composition.