Patents by Inventor Frédéric Guérin

Frédéric Guérin 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: 11944695
    Abstract: The present application relates to a colouring solid particle for dyeing keratin fibres, in particular human keratin fibres such as the hair, comprising a core containing one or more direct dyes and/or one or more oxidation dye precursors and an upper coating layer covering said core and containing one or more cellulose ethers. The present application also relates to a process for preparing a dye composition comprising one or more colouring solid particles, to a process for the oxidation dyeing of keratin fibres, comprising the application of the composition obtained to said fibres, and to the use of this composition for dyeing keratin fibres.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: April 2, 2024
    Assignee: L'Oreal
    Inventor: Frédéric Guerin
  • Patent number: 11911636
    Abstract: The present invention relates to a process for treating keratin fibers such as the hair using a packaging article comprising i) an envelope defining at least one cavity, the envelope comprising water-soluble and/or liposoluble fibres, preferably water-soluble fibres; ii) at least one anhydrous oxidizing composition, preferably in paste or powder form, comprising at least one anhydrous chemical oxidizing agent, preferably in paste or powder form; it being understood that the oxidizing composition is in one of the cavities defined by the envelope i).
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: February 27, 2024
    Assignee: L'OREAL
    Inventors: Fabien Aubert, Frédéric Guerin
  • Patent number: 11883512
    Abstract: The present invention relates to a composition comprising arginine, at least one silicate, at least one alkanolamine, and optionally aqueous ammonia and/or at least one compound which generates aqueous ammonia. The composition further comprises at least one thickening agent chosen from non-associative cellulose polymers, anionic associative polymers, non-ionic associative polymers, and their mixtures. The invention also relates to a method for the treatment of keratin fibres, in particular human keratin fibres, such as the hair, comprising the application of at least one composition according to the invention; and also to the use of the composition according to the invention for the treatment of said keratin fibres, and in particular for the oxidation dyeing and/or the bleaching of the latter.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: January 30, 2024
    Assignee: L'Oreal
    Inventors: Frédéric Guerin, Géraldine Login, Arnaud Hucher
  • Publication number: 20230048382
    Abstract: The present patent application relates to a process for preparing a composition for dyeing keratin fibres, in particular human keratin fibres such as the hair, comprising a step of mixing several identical or different solid particles comprising one or more dyes, preferably one or more oxidation dye precursors, with an oxidizing aqueous composition, followed by a step of adding an alkaline aqueous composition preferably comprising arginine. The present patent application also relates to a dyeing process using the composition obtained.
    Type: Application
    Filed: October 27, 2020
    Publication date: February 16, 2023
    Applicant: L'OREAL
    Inventors: Frédéric Guerin, Géraldine Login, Arnaud Hucher
  • Publication number: 20230047506
    Abstract: The present application relates to a colouring solid particle for dyeing keratin fibres, in particular human keratin fibres such as the hair, comprising a core containing one or more direct dyes and/or one or more oxidation dye precursors and an upper coating layer covering said core and containing one or more cellulose ethers. The present application also relates to a process for preparing a dye composition comprising one or more colouring solid particles, to a process for the oxidation dyeing of keratin fibres, comprising the application of the composition obtained to said fibres, and to the use of this composition for dyeing keratin fibres.
    Type: Application
    Filed: October 27, 2020
    Publication date: February 16, 2023
    Applicant: L'OREAL
    Inventor: Frédéric Guerin
  • Publication number: 20230037803
    Abstract: The present invention relates to a composition comprising arginine, at least one silicate, at least one alkanolamine, and optionally aqueous ammonia and/or at least one compound which generates aqueous ammonia. The composition further comprises at least one thickening agent chosen from non-associative cellulose polymers, anionic associative polymers, non-ionic associative polymers, and their mixtures. The invention also relates to a method for the treatment of keratin fibres, in particular human keratin fibres, such as the hair, comprising the application of at least one composition according to the invention; and also to the use of the composition according to the invention for the treatment of said keratin fibres, and in particular for the oxidation dyeing and/or the bleaching of the latter.
    Type: Application
    Filed: October 27, 2020
    Publication date: February 9, 2023
    Applicant: L'OREAL
    Inventors: Frédéric Guerin, Géraldine Login, Arnaud Hucher
  • Patent number: 11007131
    Abstract: The present invention relates to a composition for dyeing keratin fibres comprising, in a cosmetically acceptable medium: —one or more direct dyes of triarylmethane structure, —one or more amino silicones and—one or more surfactants. The invention also relates to a process for dyeing keratin fibres using said composition and also to a use for dyeing keratin fibres.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: May 18, 2021
    Assignee: L'OREAL
    Inventors: Frédéric Guerin, Valérie Nicou, Maria Nieto
  • Patent number: 11000464
    Abstract: The present invention relates to a composition for dyeing keratin fibres comprising, in a cosmetically acceptable medium of acidic pH, the pH of which is preferably less than 5, one or more direct dyes of triarylmethane structure, which are preferably cationic. The invention also relates to a process for dyeing keratin fibres using said composition and also to a use for dyeing keratin fibres.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: May 11, 2021
    Assignee: L'OREAL
    Inventors: Frédéric Guerin, Valérie Nicou, Maria Nieto
  • Publication number: 20210046333
    Abstract: The present invention relates to a process for treating keratin fibers such as the hair using a packaging article comprising i) an envelope defining at least one cavity, the envelope comprising water-soluble and/or liposoluble fibres, preferably water-soluble fibres; ii) at least one anhydrous oxidizing composition, preferably in paste or powder form, comprising at least one anhydrous chemical oxidizing agent, preferably in paste or powder form; it being understood that the oxidizing composition is in one of the cavities defined by the envelope i).
    Type: Application
    Filed: April 29, 2020
    Publication date: February 18, 2021
    Inventors: Fabien AUBERT, Frédéric GUERIN
  • Publication number: 20200268629
    Abstract: The present invention relates to a composition for dyeing keratin fibres comprising, in a cosmetically acceptable medium of acidic pH, the pH of which is preferably less than 5, one or more direct dyes of triarylmethane structure, which are preferably cationic. The invention also relates to a process for dyeing keratin fibres using said composition and also to a use for dyeing keratin fibres.
    Type: Application
    Filed: December 20, 2016
    Publication date: August 27, 2020
    Inventors: Frédéric GUERIN, Valérie NICOU, Maria NIETO
  • Publication number: 20200261337
    Abstract: The present invention relates to a composition for dyeing keratin fibres comprising, in a cosmetically acceptable medium: —one or more direct dyes of triarylmethane structure, —one or more amino silicones and —one or more surfactants. The invention also relates to a process for dyeing keratin fibres using said composition and also to a use for dyeing keratin fibres.
    Type: Application
    Filed: December 20, 2016
    Publication date: August 20, 2020
    Inventors: Frédéric GUERIN, Valérie NICOU, Maria NIETO
  • Patent number: 10130829
    Abstract: The present invention relates to a packaging article comprising: i) an envelope defining at least one cavity, the envelope comprising water-soluble and/or liposoluble fibres; ii) at least one anhydrous dye composition containing at least one direct dye; and iii) optionally at least one anhydrous oxidizing agent; it being understood that the dye composition ii) and the anhydrous oxidizing agent iii), when it is present, are in one of the cavities defined by the envelope i). Another subject of the invention is the use of the said article for dyeing keratin fibres and a process for dyeing keratin fibres using the said article. The use of the packaging article makes it possible to obtain dye compositions whose consistency is pleasant on use, which are easy to apply and which make it possible to obtain powerful colouring of the hair.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: November 20, 2018
    Assignee: L'OREAL
    Inventors: Fabien Aubert, Frédéric Guerin
  • Patent number: 10117811
    Abstract: The present invention relates to a packaging article comprising i) an envelope defining at least one cavity, the envelope comprising water-soluble or liposoluble fibers, ii) at least one anhydrous dye composition containing at least one oxidation dye; and iii) optionally at least one anhydrous oxidizing agent, preferably in powder form; it being understood that the dye composition ii) and the chemical oxidizing agent iii), when it is present, are in one of the cavities of the envelope i). Another subject of the invention is the use of the packaging article for dyeing keratin fibers, and a process for dyeing keratin fibers using the said article. The use of the packaging article makes it possible to obtain dye compositions having good dyeing properties, which are easy to apply and which make it possible to obtain powerful coloring of the hair.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: November 6, 2018
    Assignee: L'OREAL
    Inventors: Fabien Aubert, Frédéric Guerin
  • Publication number: 20170007856
    Abstract: The present invention relates to a process for treating keratin fibers such as the hair using a packaging article comprising i) an envelope defining at least one cavity, the envelope comprising water-soluble and/or liposoluble fibres, preferably water-soluble fibres; ii) at least one anhydrous oxidizing composition, preferably in paste or powder form, comprising at least one anhydrous chemical oxidizing agent, preferably in paste or powder form; it being understood that the oxidizing composition is in one of the cavities defined by the envelope i).
    Type: Application
    Filed: December 19, 2014
    Publication date: January 12, 2017
    Inventors: Fabien AUBERT, Frédéric GUERIN
  • Publication number: 20170001045
    Abstract: The present invention relates to a packaging article comprising: i) an envelope defining at least one cavity, the envelope comprising water-soluble and/or liposoluble fibres; ii) at least one anhydrous dye composition containing at least one direct dye; and iii) optionally at least one anhydrous oxidizing agent; it being understood that the dye composition ii) and the anhydrous oxidizing agent iii), when it is present, are in one of the cavities defined by the envelope i). Another subject of the invention is the use of the said article for dyeing keratin fibres and a process for dyeing keratin fibres using the said article. The use of the packaging article makes it possible to obtain dye compositions whose consistency is pleasant on use, which are easy to apply and which make it possible to obtain powerful colouring of the hair.
    Type: Application
    Filed: December 19, 2014
    Publication date: January 5, 2017
    Inventors: Fabien AUBERT, Frédéric GUERIN
  • Publication number: 20160367447
    Abstract: The present invention relates to a packaging article comprising i) an envelope defining at least one cavity, the envelope comprising water-soluble or liposoluble fibres, ii) at least one anhydrous dye composition containing at least one oxidation dye; and iii) optionally at least one anhydrous oxidizing agent, preferably in powder form; it being understood that the dye composition ii) and the chemical oxidizing agent iii), when it is present, are in one of the cavities of the envelope i). Another subject of the invention is the use of the packaging article for dyeing keratin fibres, and a process for dyeing keratin fibres using the said article. The use of the packaging article makes it possible to obtain dye compositions having good dyeing properties, which are easy to apply and which make it possible to obtain powerful colouring of the hair.
    Type: Application
    Filed: December 19, 2014
    Publication date: December 22, 2016
    Inventors: Fabien AUBERT, Frederic GUERIN
  • Patent number: 9522106
    Abstract: A subject-matter of the invention is a method for dyeing and/or lightening keratinous fibres, such as the hair, employing i) at least one direct dye having a disulphide, thiol or protected thiol functional group and ii) at least one thickening organic polymer, iii) at least one (poly)ethoxylated fatty alcohol and/or one nonionic surfactant, iv) at least one alkaline agent and v) at least one reducing agent. Another subject-matter of the invention is a composition comprising the ingredients i) to v), the use of the combination of i), ii), iii), iv) and v) for dyeing and/or lightening keratinous fibres and a multicompartment kit comprising the ingredients i) to v). The dyeing method and the composition according to the invention make it possible in particular to obtain a lasting coloration on keratinous fibres which is intense, chromatic and/or homogeneous, with or without the use of an oxidizing agent.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: December 20, 2016
    Assignee: L'OREAL
    Inventors: Frédéric Guerin, Chrystel Pourille
  • Patent number: 9271915
    Abstract: The invention relates to a process for dyeing and/or lightening keratin fibres such as the hair, using i) at least one direct dye bearing a disulfide, thiol or protected-thiol function and ii) at least one non-cellulose-based thickening organic polymer, iii) at least one alkaline agent, iv) at least one reducing agent and optionally v) at least one surfactant. The invention also relates to a composition comprising the ingredients i) to iv) and optionally v), to the use of the combination of i), ii), iii), iv) and optionally v) for the dyeing and/or lightening of keratin fibres, and to a multi-compartment kit comprising the ingredients i) to iv) and optionally v). The dyeing process and the composition according to the invention especially afford a long-lasting coloration on keratin fibres, which is strong, chromatic and/or homogeneous, with or without the use of an oxidizing agent.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: March 1, 2016
    Assignee: L'OREAL
    Inventors: Frédéric Guerin, Chrystel Pourille
  • Patent number: 9265705
    Abstract: The invention relates to a process for dyeing and/or lightening keratin fibres such as the hair, using i) at least one direct dye bearing a disulfide, thiol or protected-thiol function and ii) at least one nonionic surfactant, iii) at least one amphoteric surfactant, iv) at least one alkaline agent, and v) at least one reducing agent. The invention also relates to a composition comprising the ingredients i) to v), to the use of the combination of i), ii), iii), iv) and v) for the dyeing and/or lightening of keratin fibres, and to a multi-compartment kit comprising the ingredients i) to v). The dyeing process and the composition according to the invention especially afford a long-lasting coloration on keratin fibres, which is strong, chromatic and/or homogeneous, with or without the use of an oxidizing agent.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: February 23, 2016
    Assignee: L'OREAL
    Inventors: Frédéric Guerin, Chrystel Pourille
  • Publication number: 20140137342
    Abstract: The invention relates to a process for dyeing and/or lightening keratin fibres such as the hair, using i) at least one direct dye bearing a disulfide, thiol or protected-thiol function and ii) at least one nonionic surfactant, iii) at least one amphoteric surfactant, iv) at least one alkaline agent, and v) at least one reducing agent. The invention also relates to a composition comprising the ingredients i) to v), to the use of the combination of i), ii), iii), iv) and v) for the dyeing and/or lightening of keratin fibres, and to a multi-compartment kit comprising the ingredients i) to v). The dyeing process and the composition according to the invention especially afford a long-lasting coloration on keratin fibres, which is strong, chromatic and/or homogeneous, with or without the use of an oxidizing agent.
    Type: Application
    Filed: February 17, 2012
    Publication date: May 22, 2014
    Applicant: L'OREAL
    Inventors: Frédéric Guerin, Chrystel Pourille