Patents by Inventor Mary Elizabeth Parent

Mary Elizabeth Parent 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).

  • SURFACTANTS WITH A TERMINAL DIALKYL- OR CYCLOALKYL-SUBSTITUTED TERTIARY AMINE AND INKS INCLUDING THE SAME
    Publication number: 20160131958
    Abstract: Surfactants are provided that have a hydrophobic tail portion and a hydrophilic head portion. The hydrophilic head portion includes a terminal dialkyl-substituted tertiary amine or a terminal cycloalkyl-substituted tertiary amine. Also provided are pigment-based inks employing the surfactant, a combination of an electronic display and the pigment-based inks, and a process for reducing conductivity in primary amine-based surfactants and improving reliability of electronic inks employing such surfactants.
    Type: Application
    Filed: January 5, 2016
    Publication date: May 12, 2016
    Inventors: Zhang-Lin Zhou, Qin Liu, Mary Elizabeth Parent
  • Surfactants with a terminal dialkyl- or cycloalkyl-substituted tertiary amine and inks including the same
    Patent number: 9291873
    Abstract: Surfactants are provided that have a hydrophobic tail portion and a hydrophilic head portion. The hydrophilic head portion includes a terminal dialkyl-substituted tertiary amine or a terminal cycloalkyl-substituted tertiary amine. Also provided are pigment-based inks employing the surfactant, a combination of an electronic display and the pigment-based inks, and a process for reducing conductivity in primary amine-based surfactants and improving reliability of electronic inks employing such surfactants.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: March 22, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Qin Liu, Mary Elizabeth Parent
  • Surfactants With A Terminal Dialkyl- Or Cycloalkyl-Substituted Tertiary Amine And Inks Including The Same
    Publication number: 20140118816
    Abstract: Surfactants are provided that have a hydrophobic tail portion and a hydrophilic head portion. The hydrophilic head portion includes a terminal dialkyl-substituted tertiary amine or a terminal cycloalkyl-substituted tertiary amine. Also provided are pigment-based inks employing the surfactant, a combination of an electronic display and the pigment-based inks, and a process for reducing conductivity in primary amine-based surfactants and improving reliability of electronic inks employing such surfactants.
    Type: Application
    Filed: June 10, 2011
    Publication date: May 1, 2014
    Inventors: Zhang-Lin Zhou, Qin Liu, Mary Elizabeth Parent