Patents by Inventor Eric Osei-Acquah

Eric Osei-Acquah 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: 11369811
    Abstract: Disclosed herein is an agent for shaping or altering the shape of hair, such as by straightening or relaxing hair, the agent comprising: A. a hair treatment composition containing an alkaline material selected from a hydroxide-containing compound and a carbonate compound; a cationic polymer selected from a quaternary diammonium polycondensate; an amphoteric polymer selected from a quaternary ammonium compound; an organic solvent, and water; and optionally, B. an activator component; wherein the pH of the composition is equal to or greater than 12 and wherein the weight ratio of (b) to (c) ranges from about 1 up to about 3.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: June 28, 2022
    Assignee: L'OREAL
    Inventors: Angela Ellington, Eric Osei-Acquah, Frederic Cervantes
  • Publication number: 20170361129
    Abstract: Disclosed herein is an agent for shaping or altering the shape of hair, such as by straightening or relaxing hair, the agent comprising: A. a hair treatment composition containing an alkaline material selected from a hydroxide-containing compound and a carbonate compound; a cationic polymer selected from a quaternary diammonium polycondensate; an amphoteric polymer selected from a quaternary ammonium compound; an organic solvent, and water; and optionally, B. an activator component; wherein the pH of the composition is equal to or greater than 12 and wherein the weight ratio of (b) to (c) ranges from about 1 up to about 3.
    Type: Application
    Filed: December 17, 2015
    Publication date: December 21, 2017
    Applicant: L'OREAL
    Inventors: Angela ELLINGTON, Eric OSEI-ACQUAH, Frederic CERVANTES
  • Patent number: 9421154
    Abstract: The present invention is directed to composition for straightening or relaxing hair containing: (a) at least one hydroxide-containing active ingredient; (b) at least one polyhydric alcohol having 4 or more carbon atoms and two hydroxyl groups; (c) optionally, at least one nonionic surfactant having an HLB of from about 8 to about 20; (d) optionally, at least one amphoteric and/or zwitterionic surfactant; and (e) remainder, to 100%, of a cosmetically suitable medium.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: August 23, 2016
    Assignee: L'OREAL
    Inventors: Angela Ellington, Eric Osei-Acquah, James Cooper, Darius Danielski
  • Publication number: 20100158845
    Abstract: The present invention is directed to composition for straightening or relaxing hair containing: (a) at least one hydroxide-containing active ingredient; (b) at least one polyhydric alcohol having 4 or more carbon atoms and two hydroxyl groups; (c) optionally, at least one nonionic surfactant having an HLB of from about 8 to about 20; (d) optionally, at least one amphoteric and/or zwitterionic surfactant; and (e) remainder, to 100%, of a cosmetically suitable medium.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 24, 2010
    Applicant: L'OREAL
    Inventors: Angela ELLINGTON, Eric Osei-Acquah, James Cooper, Darius Danielski
  • Patent number: 7597880
    Abstract: The present invention relates to a no-mix hair relaxer formulation and methods of its use. The relaxer includes a synergistic combination of sodium hydroxide and lithium hydroxide and has a pH of between about 12.7 and about 13.2. These no-mix hair relaxers provide excellent hair straightening performance, in 30 minutes or less, with reduced irritation.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: October 6, 2009
    Assignee: L'Oreal
    Inventors: Adu Gyamfi Darkwa, Eric Osei-Acquah, Angela D. Ellington
  • Publication number: 20040166074
    Abstract: The present invention relates to an activator for use in a two-component hair relaxer system. The activator includes an alkaline material such as calcium hydroxide mixed with mineral oil. Preferably, the activator exists as a suspension, emulsion or gel. Hair relaxer systems including a mineral oil containing activator and a cream base, hair relaxers made by mixing these two components, and methods of using such systems to straighten hair are also described.
    Type: Application
    Filed: February 25, 2003
    Publication date: August 26, 2004
    Applicant: L'OREAL
    Inventors: Adu Gyamfi Darkwa, Eric Osei-Acquah, James Cooper
  • Publication number: 20040166073
    Abstract: The present invention relates to a no-mix hair relaxer formulation and methods of its use. The relaxer includes a synergistic combination of sodium hydroxide and lithium hydroxide and has a pH of between about 12.7 and about 13.2. These no-mix hair relaxers provide excellent hair straightening performance, in 30 minutes or less, with reduced irritation.
    Type: Application
    Filed: February 24, 2003
    Publication date: August 26, 2004
    Applicant: L'OREAL
    Inventors: Adu Gyamfi Darkwa, Eric Osei-Acquah, Angela D. Ellington