Patents by Inventor Jing Xiao Sun

Jing Xiao Sun 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 modified nozzle plate
    Patent number: 6151045
    Abstract: The specification describes a method and composition for treating selected areas of the surface of a polyimide material used to make a nozzle plate for an ink jet printer in order to decrease the surface energy of the polyimide material so ink repellency of the material is increased in the selected areas. The method includes applying a polydialkylsiloxane having reactive end groups to the selected areas of the polyimide material and curing the polydialkylsiloxane on the surface to provide a surface having decreased surface energy. A particularly preferred polydialkylsiloxane is an amine terminated polydialkylsiloxane having a molecular weight ranging from about 500 to about 40,000 number average molecular weight.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: November 21, 2000
    Assignee: Lexmark International, Inc.
    Inventors: Bradley Leonard Beach, Sean David Smith, Tonya Harris Jackson, Jing Xiao Sun
  • Ink composition
    Patent number: 5869564
    Abstract: The invention relates to an aqueous ink composition for use in ink jet printers comprising an aqueous carrier; a pigment; and a copolymer comprising a hydrophilic segment having an acidic function group, and a hydrophobic segment having a hydrolytically stable siloxyl substituent.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: February 9, 1999
    Assignee: International Business Machines Corporation
    Inventors: Bradley Leonard Beach, Arthur Fred Diaz, Seong-Jin Kim, Dennis Richard McKean, Anna Marie Pearson, Jing Xiao Sun, Ajay Kanubhai Suthar, Richard Barber Watkins
  • Pigmented inks with polymeric dispersants
    Patent number: 5719204
    Abstract: The invention relates to polymeric dispersants used in formulating aqueous ink compositions, as well as inks containing those dispersants. The dispersants are graft copolymers comprising a hydrophilic polymeric segment, a hydrophobic polymeric segment incorporating a hydrolytically-stable siloxyl substituent, and a stabilizing segment, such as a reactive surfactant macromer, a protective colloid macromer, or a non-siloxyl hydrophobic monomer. The inks made with these dispersants show excellent stability, print characteristics, water-fastness, light-fastness, optical density, and in-use maintenance characteristics.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: February 17, 1998
    Assignee: Lexmark International, Inc.
    Inventors: Bradley Leonard Beach, Anna Marie Pearson, Jing Xiao Sun, Richard B. Watkins
  • Polymeric dispersants for pigmented inks
    Patent number: 5714538
    Abstract: The invention relates to polymeric dispersants used in formulating aqueous ink compositions, as well as inks containing those dispersants. The dispersants are graft copolymers comprising a hydrophilic polymeric segment, a hydrophobic polymeric segment incorporating a hydrolytically-stable siloxyl substituent, and a stabilizing segment, such as a reactive surfactant macromer, a protective colloid macromer, or a non-siloxyl hydrophobic monomer. The inks made with these dispersants show excellent stability, print characteristics, water-fastness, optical density, and in-use maintenance characteristics.
    Type: Grant
    Filed: December 26, 1995
    Date of Patent: February 3, 1998
    Assignee: Lexmark International, Inc.
    Inventors: Bradley L. Beach, Anna Marie Pearson, Jing Xiao Sun, Richard B. Watkins