Patents by Inventor Kevin Zavadil

Kevin Zavadil 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).

  • Tailored ink for piston driven electrostatic liquid drop modulator
    Patent number: 6881250
    Abstract: The present invention relates to an ink composition including water, a solvent, a solvent-soluble dye, and a surfactant, where the ink exhibits a stable liquid microemulsion phase at a first temperature and a second temperature higher than the first temperature and has a conductivity of at most about 200 ?S/cm and a dielectric constant of at least about 60, and methods of making such ink compositions. The present invention also relates to a method of making an ink composition for use in a microelectromechanical system-based fluid ejector. The method involves providing a solution or dispersion including a dye or a pigment and adding to the solution or dispersion an additive which includes a material that enhances dielectric permittivity and/or reduces conductivity under conditions effective to produce an ink composition having a conductivity of at most about 200 ?S/cm and a dielectric constant of at least about 60.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: April 19, 2005
    Assignees: Xerox Corporation, Sandia Corporation
    Inventors: Raymond W. Wong, Marcel P. Breton, Christine E. Bedford, Leonard M. Carreira, Arthur M. Gooray, George J. Roller, Kevin Zavadil, Paul Galambos, Joseph Crowley
  • Tailored ink for piston driven electrostatic liquid drop modulator
    Publication number: 20040134379
    Abstract: The present invention relates to an ink composition including water, a solvent, a solvent-soluble dye, and a surfactant, where the ink exhibits a stable liquid microemulsion phase at a first temperature and a second temperature higher than the first temperature and has a conductivity of at most about 200 &mgr;S/cm and a dielectric constant of at least about 60, and methods of making such ink compositions. The present invention also relates to a method of making an ink composition for use in a microelectromechanical system-based fluid ejector. The method involves providing a solution or dispersion including a dye or a pigment and adding to the solution or dispersion an additive which includes a material that enhances dielectric permittivity and/or reduces conductivity under conditions effective to produce an ink composition having a conductivity of at most about 200 &mgr;S/cm and a dielectric constant of at least about 60.
    Type: Application
    Filed: January 15, 2003
    Publication date: July 15, 2004
    Inventors: Raymond W. Wong, Marcel P. Breton, Christine E. Bedford, Leonard M. Carreira, Arthur M. Gooray, George J. Roller, Kevin Zavadil, Paul Galambos, Joseph Crowley