Patents by Inventor Peter J. Valianatos

Peter J. Valianatos 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).

  • Patent number: 9005494
    Abstract: Prior art processes for producing protein-based capsules (for example, capsules for use in electrophoretic media) tend to be wasteful because they produce many capsules outside the desired size range, which is typically about 20 to 50 ?m. Capsule size distribution and yields can be improved by either (a) emulsifying a water-immiscible phase in a preformed coacervate of the protein; or (b) using a limited coalescence process with colloidal alumina as the surface-active particulate material.
    Type: Grant
    Filed: August 10, 2009
    Date of Patent: April 14, 2015
    Assignee: E Ink Corporation
    Inventors: Peter J. Valianatos, Rajesh Chebiyam, Jeremy J. Manning, Michael L. Steiner, Thomas H. Whitesides, Michael D. Walls
  • Publication number: 20100148385
    Abstract: A first electrophoretic medium comprises an electrically charged particle suspended in a suspending fluid, the particle having a polymeric shell having repeating units derived from at least one monomer the homopolymer of which is incompatible with the suspending fluid. A second, similar electrophoretic medium comprises a suspending fluid, and first and second types of electrically charged particle suspended in the suspending fluid, the two types of particle having differing optical characteristics but both having polymeric shells. The polymeric shells are arranged such that homoaggregation of the two types of particles is thermodynamically favored over heteroaggregation.
    Type: Application
    Filed: February 25, 2010
    Publication date: June 17, 2010
    Applicant: E INK CORPORATION
    Inventors: Suzanne Balko, Alberto Goenaga, Peter J. Valianatos, Charles H. Honeyman, Elizabeth M. Gates, Matthew A. King
  • Publication number: 20100044894
    Abstract: Prior art processes for producing protein-based capsules (for example, capsules for use in electrophoretic media) tend to be wasteful because they produce many capsules outside the desired size range, which is typically about 20 to 50 ?m. Capsule size distribution and yields can be improved by either (a) emulsifying a water-immiscible phase in a preformed coacervate of the protein; or (b) using a limited coalescence process with colloidal alumina as the surface-active particulate material.
    Type: Application
    Filed: August 10, 2009
    Publication date: February 25, 2010
    Applicant: E INK CORPORATION
    Inventors: Peter J. Valianatos, Rajesh Chebiyam, Jeremy J. Manning, Michael L. Steiner, Thomas H. Whitesides, Michael D. Walls
  • Publication number: 20090206499
    Abstract: A first electrophoretic medium comprises an electrically charged particle suspended in a suspending fluid, the particle having a polymeric shell having repeating units derived from at least one monomer the homopolymer of which is incompatible with the suspending fluid. A second, similar electrophoretic medium comprises a suspending fluid, and first and second types of electrically charged particle suspended in the suspending fluid, the two types of particle having differing optical characteristics but both having polymeric shells. The polymeric shells are arranged such that homoaggregation of the two types of particles is thermodynamically favored over heteroaggregation.
    Type: Application
    Filed: May 1, 2009
    Publication date: August 20, 2009
    Applicant: E Ink Corporation
    Inventors: Thomas H. Whitesides, Qingye Zhou, Robert W. Zehner, Karl R. Amundson, Suzanne Balko, Alberto Goenaga, Peter J. Valianatos, Charles H. Honeyman, Elizabeth M. Gates, Matthew A. King, Russell J. Wilcox
  • Patent number: 7242513
    Abstract: An encapsulated electrophoretic display having a plurality of non-spherical capsules disposed substantially in a single layer on a substrate.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: July 10, 2007
    Assignee: E Ink Corporation
    Inventors: Jonathan D. Albert, Glen Crossley, Katharine Geramita, Karl R. Amundson, Michael L. Steiner, Paul Drzaic, Andrew Loxley, Barrett Comiskey, Peter J. Valianatos
  • Patent number: 6900851
    Abstract: The invention features a photoconductively addressed display and a method of photoconductive addressing in a display. The method includes providing an electro-optic imaging layer that extends in an X direction and a Y direction and comprises an array of image elements. A column electrode layer is provided adjacent to one side of the electro-optic imaging layer. The column electrode layer includes a plurality of column electrodes that each extend in the Y direction and are spaced from one another in the X direction. A photoconductive layer disposed between the electro-optic imaging layer and the column electrode layer is provided. An elongate portion of the photoconductive layer is illuminated in the X direction while scanning the illumination in the Y direction to translate a location of the illuminated elongate portion.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: May 31, 2005
    Assignee: E Ink Corporation
    Inventors: Ian D. Morrison, Rachael A. Forgit, Peter J. Valianatos, Craig A. Herb, Guy M. Danner
  • Patent number: 6839158
    Abstract: An encapsulated electrophoretic display having a plurality of non-spherical capsules disposed substantially in a single layer on a substrate.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: January 4, 2005
    Assignee: E Ink Corporation
    Inventors: Jonathan D. Albert, Glen Crossley, Katharine Geramita, Karl R. Amundson, Michael L. Steiner, Paul Drzaic, Andrew Loxley, Barrett Comiskey, Peter J. Valianatos
  • Publication number: 20040217929
    Abstract: An encapsulated electrophoretic display having a plurality of non-spherical capsules disposed substantially in a single layer on a substrate.
    Type: Application
    Filed: May 20, 2004
    Publication date: November 4, 2004
    Applicant: E Ink Corporation
    Inventors: Jonathan D. Albert, Glen Crossley, Katharine Geramita, Karl R. Amundson, Michael L. Steiner, Paul Drzaic, Andrew Loxley, Barrett Comiskey, Peter J. Valianatos
  • Publication number: 20030151702
    Abstract: The invention features a photoconductively addressed display and a method of photoconductive addressing in a display. The method includes providing an electro-optic imaging layer that extends in an X direction and a Y direction and comprises an array of image elements. A column electrode layer is provided adjacent to one side of the electro-optic imaging layer. The column electrode layer includes a plurality of column electrodes that each extend in the Y direction and are spaced from one another in the X direction. A photoconductive layer disposed between the electro-optic imaging layer and the column electrode layer is provided. An elongate portion of the photoconductive layer is illuminated in the X direction while scanning the illumination in the Y direction to translate a location of the illuminated elongate portion.
    Type: Application
    Filed: February 8, 2002
    Publication date: August 14, 2003
    Inventors: Ian D. Morrison, Rachael A. Forgit, Peter J. Valianatos, Craig A. Herb, Guy M. Danner
  • Publication number: 20030137717
    Abstract: An encapsulated electrophoretic display having a plurality of non-spherical capsules disposed substantially in a single layer on a substrate.
    Type: Application
    Filed: October 6, 1999
    Publication date: July 24, 2003
    Inventors: JONATHAN D. ALBERT, GLEN CROSSLEY, KATHARINE GERAMITA, KARL R. AMUNDSON, MICHAEL L. STEINER, PAUL DRZAIC, ANDREW LOXLEY, BARRETT COMISKEY, PETER J. VALIANATOS
  • Patent number: 5693372
    Abstract: A process for dip coating drums comprising providing a drum having an outer surface to be coated, an upper end and a lower end, providing at least one coating vessel having a bottom, an open top and a cylindrically shaped vertical interior wall having a diameter greater than the diameter of the drum, flowing liquid coating material from the bottom of the vessel to the top of the vessel, immersing the drum in the flowing liquid coating material while maintaining the axis of the drum in a vertical orientation, maintaining the outer surface of the drum in a concentric relationship with the vertical interior wall of the cylindrical coating vessel while the drum is immersed in the coating material, the outer surface of the drum being radially spaced from the vertical interior wall of the cylindrical coating vessel, maintaining laminar flow motion of the coating material as it passes between the outer surface of the drum and the vertical interior wall of the vessel, maintaining the radial spacing between the outer
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: December 2, 1997
    Assignee: Xerox Corporation
    Inventors: Alan B. Mistrater, Steven J. Grammatica, Peter J. Valianatos, Timothy J. Leenhouts, April M. Mattox, Rachael A. Forgit, John S. Chambers, Roger T. Janezic, Leslie B. Cummins, Richard C. Petralia, Edward C. Williams, Mark S. Thomas, John T. Dilko, John K. Williams
  • Patent number: 5681391
    Abstract: Apparatus for dip coating comprising a drum having an outer surface to be coated, an upper end and a lower end, at least one coating vessel having a bottom, an open top and a cylindrically shaped vertical interior wall having a diameter greater than the diameter of the drum, an inlet at the bottom of the vessel, the inlet adapted to feed flowing coating fluid into the vessel, a mandrel adapted to maintain the outer surface of the drum in a concentric relationship with the vertical interior wall of the cylindrical coating vessel while the drum is immersed in the flowing coating material, the outer surface of the drum being radially spaced from the vertical interior wall of the cylindrical coating vessel, and at least one flow regulating member adapted to maintain laminar flow motion of the coating material as the fluid passes between the outer surface of the drum and the vertical inner wall of the vessel.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: October 28, 1997
    Assignee: Xerox Corporation
    Inventors: Alan B. Mistrater, Steven J. Grammatica, Peter J. Valianatos, Timothy J. Leenhouts, April M. Mattox, Rachael A. Forgit, John S. Chambers, Roger T. Janezic, Leslie B. Cummins, Richard C. Petralia, Edward C. Williams, Mark S. Thomas, John T. Dilko, John K. Williams
  • Patent number: 5529870
    Abstract: An electrophotographic imaging member is characterized by a halogenindium phthalocyanine produced by dry milling and treating with an organic amine solvent.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: June 25, 1996
    Assignee: Xerox Corporation
    Inventors: Steven J. Grammatica, Ah-Mee Hor, Roger E. Gaynor, Alan B. Mistrater, Peter J. Valianatos, John S. Chambers, Rachael A. Forgit, Jacques Poitras