Patents by Inventor Henry Drummond Boswell

Henry Drummond Boswell 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).

  • Compositions suitable for the treatment of hair comprising chelants and methods for reducing oxidative hair damage
    Patent number: 7186275
    Abstract: The present invention relates to hair care compositions comprising an oxidizing agent and chelants having log ? ? K CuL log ? ? K CaL ratio calculated at pH 10 of at least 3.20 wherein log KCuL is the common logarithm of the Conditional Stability Constant of said chelant with Cu2+ and log KCaL is the common logarithm of the Conditional Stability Constant of said chelant with Ca2+. Suitable chelants are diamine-N,N?-dipolyacids or monoamine monoamide-N,N?-dipolyacids. The compositions according to the present invention contribute to reducing the oxidative damage sustained by a keratinous fiber such as hair during bleaching, dyeing, perming or other oxidative treatments. Especially preferred diamine dipolyacid is ethylenediamine-N,N?-disuccinic acid (EDDS).
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: March 6, 2007
    Assignee: The Procter & Gamble Company
    Inventors: Henry Drummond Boswell, Jennifer Mary Marsh, John Scott Park, Michael Andrew Olshavsky
  • Oxidative treatment of hair with reduced hair damage
    Patent number: 7179302
    Abstract: The present invention relates to hair care compositions comprising chelants and methods for reducing oxidative hair damage. The compositions contribute to reducing the oxidative damage sustained by keratinous fibers such as human hair during bleaching, dyeing, perming or other oxidative treatments. The compositions according to the present invention also provide excellent color evenness and color fastness.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: February 20, 2007
    Assignee: The Procter & Gamble Company
    Inventors: Henry Drummond Boswell, Jennifer Mary Marsh, John Scott Park, Michael Andrew Olshavsky
  • Oxidative treatment of hair with reduced hair damage
    Publication number: 20040105830
    Abstract: The present invention relates to hair care compositions comprising chelants and methods for reducing oxidative hair damage. The compositions contribute to reducing the oxidative damage sustained by keratinous fibers such as human hair during bleaching, dyeing, perming or other oxidative treatments. The compositions according to the present invention also provide excellent color evenness and color fastness.
    Type: Application
    Filed: September 22, 2003
    Publication date: June 3, 2004
    Applicant: The Procter & Gamble Company
    Inventors: Henry Drummond Boswell, Jennifer Mary Marsh, John Scott Park, Michael Andrew Olshavsky
  • Compositions suitable for the treatment of hair comprising chelants and methods for reducing oxidative hair damage
    Publication number: 20040086475
    Abstract: The present invention relates to hair care compositions comprising an oxidizing agent and chelants having 1 log ⁢   ⁢ K CuL log ⁢   ⁢ K CaL
    Type: Application
    Filed: September 22, 2003
    Publication date: May 6, 2004
    Applicant: The Procter & Gamble Company
    Inventors: Henry Drummond Boswell, Jennifer Mary Marsh, John Scott Park, Michael Andrew Olshavsky