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).
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Patent number: 12139626Abstract: There is a thermochromic ink composition having core-shell microcapsules, an aqueous dispersion medium and a decolorization agent.Type: GrantFiled: December 22, 2020Date of Patent: November 12, 2024Assignee: Société BICInventors: Aurore Sauvage, Guillaume Caffier
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Patent number: 12116493Abstract: 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: GrantFiled: February 24, 2022Date of Patent: October 15, 2024Assignees: SOCIÉTÉ BIC, UNIVERSITÉ DE HAUTE-ALSACE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Karine Mougin, Guillaume Caffier, Feriel Ghellal, Arnaud Spangenberg, Quentin Bauerlin
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Publication number: 20240301225Abstract: 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: ApplicationFiled: February 24, 2022Publication date: September 12, 2024Applicants: SOCIÉTÉ BIC, UNIVERSITÉ DE HAUTE-ALSACE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Karine MOUGIN, Guillaume CAFFIER, Feriel GHELLAL, Arnaud SPANGENBERG, Quentin BAUERLIN
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Publication number: 20240227430Abstract: 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: ApplicationFiled: April 28, 2022Publication date: July 11, 2024Applicants: SOCIÉTÉ BIC, BIC Violex Single Member S.A.Inventors: Nikolaos CHRYSANTHAKOPOULOS, Guillaume CAFFIER
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Publication number: 20240059915Abstract: 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: ApplicationFiled: December 14, 2021Publication date: February 22, 2024Applicant: Société BICInventors: Guillaume CAFFIER, Wing-yam LIU
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Patent number: 11891530Abstract: 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: GrantFiled: December 19, 2018Date of Patent: February 6, 2024Assignee: SOCIETE BICInventors: Guillaume Caffier, Anne-Lise Damiano, Christelle Debrauwer, Claire Evrard, Wing Yam Liu
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Patent number: 11787226Abstract: 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: GrantFiled: July 30, 2019Date of Patent: October 17, 2023Assignee: SOCIETE BICInventors: Guillaume Caffier, Aurore Sauvage
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Publication number: 20230265312Abstract: 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: ApplicationFiled: July 20, 2021Publication date: August 24, 2023Applicant: SOCIÉTÉ BICInventors: Guillaume CAFFIER, Wing Yam LIU
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Publication number: 20230159787Abstract: 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: ApplicationFiled: February 26, 2021Publication date: May 25, 2023Applicant: SOCIÉTÉ BICInventors: Guillaume CAFFIER, Wing Yam LIU
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Publication number: 20220098423Abstract: 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: ApplicationFiled: January 24, 2020Publication date: March 31, 2022Inventors: Guillaume CAFFIER, Wing Yam LIU
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Publication number: 20210362536Abstract: 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: ApplicationFiled: July 30, 2019Publication date: November 25, 2021Inventors: Guillaume CAFFIER, Aurore SAUVAGE
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Publication number: 20210230440Abstract: There is a thermochromic ink composition having core-shell microcapsules, an aqueous dispersion medium and a decolorization agent.Type: ApplicationFiled: December 22, 2020Publication date: July 29, 2021Inventors: Aurore SAUVAGE, Guillaume CAFFIER
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Publication number: 20210108099Abstract: 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: ApplicationFiled: December 19, 2018Publication date: April 15, 2021Inventors: Guillaume CAFFIER, Anne-Lise DAMIANO, Christelle DEBRAUWER, Claire EVRARD, Wing Yam LIU
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Patent number: 10899165Abstract: 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: GrantFiled: April 18, 2019Date of Patent: January 26, 2021Assignee: SOCIÉTÉ BICInventors: Etienne Roudaut, Guillaume Caffier, Loic Folgoas
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Publication number: 20190322119Abstract: 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: ApplicationFiled: April 18, 2019Publication date: October 24, 2019Applicant: SOCIÉTÉ BICInventors: Etienne ROUDAUT, Guillaume CAFFIER, Loic FOLGOAS