Process of preparation of an aqueous gel ink with variable color comprising silver nanoparticles

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11802214
APP PUB NO 20220275228A1
SERIAL NO

17631115

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A process for preparing in situ an aqueous gel ink with variable color comprising the following steps: (i) preparing a gel-based matrix of aqueous ink comprising an N-Acyl-aminophenol, wherein the hydroxyl group is preferably in meta or para position on the benzenic group, and (ii) adding a solution of silver salts to the gel-based matrix of aqueous ink prepared in step (i), to obtain an aqueous gel ink with variable color with silver nanoparticles disposed therein. An aqueous gel ink with variable color obtained according to process for preparing, comprising an N-Acyl-aminophenol, wherein the hydroxyl group is preferably in meta or para position on the benzenic group and silver nanoparticles. A writing instrument comprising an aqueous gel ink with variable color.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE75016 PARIS
SOCIETE BIC92110 CLICHY
UNIVERSITE DE HAUTE ALSACE68093 MULHOUSE CEDEX

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Albenge, Olivier Clichy, FR 18 7
Ghellal, Feriel Clichy, FR 10 2
Metillon, Romain Clichy, FR 9 2
Mougin, Karine Paris, FR 10 2
Spangenberg, Arnaud Mulhouse, FR 11 5

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Apr 30, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Apr 30, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 Apr 30, 2035
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00