Patents by Inventor Guillaume CAFFIER

Guillaume CAFFIER has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12139626
    Abstract: There is a thermochromic ink composition having core-shell microcapsules, an aqueous dispersion medium and a decolorization agent.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: November 12, 2024
    Assignee: Société BIC
    Inventors: Aurore Sauvage, Guillaume Caffier
  • Patent number: 12116493
    Abstract: A kit comprising a) an aqueous writing ink composition, containing—metal nanoparticles as coloring agent wherein the metal nanoparticles essentially consists of metal and the metal is chosen from silver, gold, aluminum and/or copper and—a dispersing agent, and b) an eradicator fluid containing at least one oxidizing agent. An aqueous eradicator fluid for erasing an aqueous writing ink composition containing metal nanoparticles as the coloring agent, in which the fluid contains an oxidizing agent and—a volatile solvent. A writing instrument containing the eradicator fluid, the use of the eradicator fluid and/or of the kit containing it and a method of correcting errors of a written mark made on a porous substrate.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: October 15, 2024
    Assignees: SOCIÉTÉ BIC, UNIVERSITÉ DE HAUTE-ALSACE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Karine Mougin, Guillaume Caffier, Feriel Ghellal, Arnaud Spangenberg, Quentin Bauerlin
  • Publication number: 20240301225
    Abstract: The present invention concerns a kit comprising a) an aqueous writing ink composition, containing—metal nanoparticles as coloring agent wherein said metal nanoparticles essentially consists of metal and said metal is chosen from silver, gold, aluminum and/or copper and—a dispersing agent, and b) an eradicator fluid containing at least one oxidizing agent. It also concerns an aqueous eradicator fluid for erasing an aqueous writing ink composition containing metal nanoparticles as the coloring agent, in which said metal nanoparticles said fluid containing—an oxidizing agent and—a volatile solvent. It further concerns a writing instrument containing the eradicator fluid, the use of the eradicator fluid and/or of the kit containing it and a method of correcting errors of a written mark made on porous substrate.
    Type: Application
    Filed: February 24, 2022
    Publication date: September 12, 2024
    Applicants: SOCIÉTÉ BIC, UNIVERSITÉ DE HAUTE-ALSACE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Karine MOUGIN, Guillaume CAFFIER, Feriel GHELLAL, Arnaud SPANGENBERG, Quentin BAUERLIN
  • Publication number: 20240227430
    Abstract: The present disclosure relates to a system comprising a writing instrument. The writing instrument comprises an ink. wherein the ink comprises a coloring agent and a bonding agent. The adhesiveness of the bonding agent can be altered by applying a voltage or a voltage and a current. Further. the system comprises a writing surface comprising a first electrode and a second electrode or a writing surface comprising a first electrode and an erasing tool comprising a second electrode.
    Type: Application
    Filed: April 28, 2022
    Publication date: July 11, 2024
    Applicants: SOCIÉTÉ BIC, BIC Violex Single Member S.A.
    Inventors: Nikolaos CHRYSANTHAKOPOULOS, Guillaume CAFFIER
  • Publication number: 20240059915
    Abstract: The present disclosure relates to a eradicable non-aqueous writing ink comprising a solvent, a gelling agent and a pH-sensitive water-soluble dye. The solvent is selected from 1,2-propanediol, diethylene glycol, monoethylene glycol and dimethylsulfoxide and/or mixtures thereof. The gelling agent comprises water-insoluble cellulose nanofibers and/or a mixture of silica particles and of a fatty acid amide wax. The pH-sensitive water-soluble dye is capable of changing from an initially colored state to a discolored state when the writing ink is exposed to an ink eradicator composition.
    Type: Application
    Filed: December 14, 2021
    Publication date: February 22, 2024
    Applicant: Société BIC
    Inventors: Guillaume CAFFIER, Wing-yam LIU
  • Patent number: 11891530
    Abstract: The present disclosure concerns non-aqueous gel writing ink including a solvent, a coloring agent and a gelling agent, in which the gelling agent is a mixture of silica particles and of a fatty acid amide wax. It also concerns the process of preparation of the non-aqueous gel writing ink and the use of a mixture of silica particles and of a fatty acid amide wax, as a gelling agent in a non-aqueous gel writing ink. It finally concerns a writing instrument containing the ink according to the present disclosure.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: February 6, 2024
    Assignee: SOCIETE BIC
    Inventors: Guillaume Caffier, Anne-Lise Damiano, Christelle Debrauwer, Claire Evrard, Wing Yam Liu
  • Patent number: 11787226
    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.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: October 17, 2023
    Assignee: SOCIETE BIC
    Inventors: Guillaume Caffier, Aurore Sauvage
  • Publication number: 20230265312
    Abstract: The present disclosure relates to pens comprising a non-aqueous writing ink comprising a solvent, a coloring agent, a resin, a gelling agent, and a homo or copolymer of vinylpyrrolidone, wherein the gelling agent is a mixture of silica particles and of a fatty acid amide wax, and wherein the homo or copolymer of vinylpyrrolidone is present in amounts of between about 0.05 and about 0.6 wt.-%, relative to the total weight of the ink.
    Type: Application
    Filed: July 20, 2021
    Publication date: August 24, 2023
    Applicant: SOCIÉTÉ BIC
    Inventors: Guillaume CAFFIER, Wing Yam LIU
  • Publication number: 20230159787
    Abstract: Pens comprise a non-aqueous writing ink comprising a solvent, a coloring agent, a resin, a gelling agent, and a homo or copolymer of vinylpyrrolidone and/or a polyvinyl alcohol which is acetalized with an aldehyde comprising between 1 and about 6 carbon atoms, wherein the gelling agent is a mixture of silica particles and of a fatty acid amide wax, wherein the homo or copolymer of vinylpyrrolidone, if present, is present in amounts of between about 0.05 and about 0.6 wt.-%, relative to the total weight of the ink and wherein the polyvinyl alcohol which is acetalized with an aldehyde comprising between 1 and about 6 carbon atoms, if present, is present in amounts of between about 0.05 and about 1.0 wt.-%, relative to the total weight of the ink.
    Type: Application
    Filed: February 26, 2021
    Publication date: May 25, 2023
    Applicant: SOCIÉTÉ BIC
    Inventors: Guillaume CAFFIER, Wing Yam LIU
  • Publication number: 20220098423
    Abstract: There is a non-aqueous gel writing ink having an organic solvent, a coloring agent and a gelling agent, and the gelling agent is non-oxidized cellulose nanofibers. There also is a use of non-oxidized cellulose nanofibers as a gelling agent in a non-aqueous gel writing ink. There is finally a writing instrument having the ink according to the present disclosure.
    Type: Application
    Filed: January 24, 2020
    Publication date: March 31, 2022
    Inventors: Guillaume CAFFIER, Wing Yam LIU
  • Publication number: 20210362536
    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.
    Type: Application
    Filed: July 30, 2019
    Publication date: November 25, 2021
    Inventors: Guillaume CAFFIER, Aurore SAUVAGE
  • Publication number: 20210230440
    Abstract: There is a thermochromic ink composition having core-shell microcapsules, an aqueous dispersion medium and a decolorization agent.
    Type: Application
    Filed: December 22, 2020
    Publication date: July 29, 2021
    Inventors: Aurore SAUVAGE, Guillaume CAFFIER
  • Publication number: 20210108099
    Abstract: The present disclosure concerns non-aqueous gel writing ink including a solvent, a coloring agent and a gelling agent, in which the gelling agent is a mixture of silica particles and of a fatty acid amide wax. It also concerns the process of preparation of the non-aqueous gel writing ink and the use of a mixture of silica particles and of a fatty acid amide wax, as a gelling agent in a non-aqueous gel writing ink. It finally concerns a writing instrument containing the ink according to the present disclosure.
    Type: Application
    Filed: December 19, 2018
    Publication date: April 15, 2021
    Inventors: Guillaume CAFFIER, Anne-Lise DAMIANO, Christelle DEBRAUWER, Claire EVRARD, Wing Yam LIU
  • Patent number: 10899165
    Abstract: A device for reproducing a color on demand. The device includes a body including a tip and a scanner. The body also includes a control unit, a plurality of ink reservoirs, an ink supply system, a mixing tank and a sensor. The control unit communicates with the scanner and ink supply system to reproduce a desired color that has been scanned.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: January 26, 2021
    Assignee: SOCIÉTÉ BIC
    Inventors: Etienne Roudaut, Guillaume Caffier, Loic Folgoas
  • Publication number: 20190322119
    Abstract: A device for reproducing a color on demand. The device includes a body including a tip and a scanner. The body also includes a control unit, a plurality of ink reservoirs, an ink supply system, a mixing tank and a sensor. The control unit communicates with the scanner and ink supply system to reproduce a desired color that has been scanned.
    Type: Application
    Filed: April 18, 2019
    Publication date: October 24, 2019
    Applicant: SOCIÉTÉ BIC
    Inventors: Etienne ROUDAUT, Guillaume CAFFIER, Loic FOLGOAS