Patents by Inventor Gracy Wingkono

Gracy Wingkono 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).

  • Surface treatment of print media
    Patent number: 8846138
    Abstract: A method for surface treatment of a paper substrate and a paper product produced therefrom are disclosed herein. The surface treatment method includes applying a salt-containing solution to at least one surface of a paper substrate by aerosol spraying in a separate step, whereby the salt distribution through the thickness of the treated paper substrate is non-uniform with the highest concentration of salt being present in the outermost portion of the paper substrate. The salt-containing solution contains at least one water-soluble metal salt and is void of any optical brightening agent (OBA).
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: September 30, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Xiaoqi Zhou, Xulong Fu, Gracy Wingkono
  • Paper with surface treatment
    Patent number: 8685503
    Abstract: A surface-treated paper produced by applying a surface sizing composition to at least one surface of a base paper, wherein said surface sizing composition comprises a non-film-forming polymer latex and a metallic salt, said non-film-forming polymer latex has a minimum film-forming temperature (MFFT) of greater than 70° C., and said surface sizing composition does not form a continuous film on the treated surface.
    Type: Grant
    Filed: January 31, 2010
    Date of Patent: April 1, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Xiaoqi Zhou, Gracy Wingkono, Dave Edmondson
  • SURFACE TREATMENT OF PRINT MEDIA
    Publication number: 20120301641
    Abstract: A method for surface treatment of a paper substrate and a paper product produced therefrom are disclosed herein. The surface treatment method includes applying a salt-containing solution to at least one surface of a paper substrate by aerosol spraying in a separate step, whereby the salt distribution through the thickness of the treated paper substrate is non-uniform with the highest concentration of salt being present in the outermost portion of the paper substrate. The salt-containing solution contains at least one water-soluble metal salt and is void of any optical brightening agent (OBA).
    Type: Application
    Filed: March 10, 2010
    Publication date: November 29, 2012
    Applicant: HEWLETE-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Xiaoqi Zhou, Xulong Fu, Gracy Wingkono
  • PAPER WITH SURFACE TREATMENT
    Publication number: 20120288645
    Abstract: A surface-treated paper produced by applying a surface sizing composition to at least one surface of a base paper, wherein said surface sizing composition comprises a non-film-forming polymer latex and a metallic salt, said non-film-forming polymer latex has a minimum film-forming temperature (MFFT) of greater than 70° C.
    Type: Application
    Filed: January 31, 2010
    Publication date: November 15, 2012
    Inventors: Xiaoqi Zhou, Gracy Wingkono, Dave Edmondson