Patents by Inventor Michael J. Eiseman

Michael J. Eiseman 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).

  • Cationic modified self-dispersing pigment dispersions and inkjet inks thereof
    Patent number: 10370549
    Abstract: This invention pertains to aqueous inkjet inks containing self-dispersing pigments. The self-dispersing pigments are modified with multivalent cations.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: August 6, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Michael Stephen Wolfe, Michael J. Eiseman, Loretta L. Tam, Cullen Kirkpatrick
  • CATIONIC MODIFIED SELF-DISPERSING PIGMENT DISPERSIONS AND INKJET INKS THEREOF
    Publication number: 20180155560
    Abstract: This invention pertains to aqueous inkjet inks containing self-dispersing pigments. The self-dispersing pigments are modified with multivalent cations.
    Type: Application
    Filed: April 27, 2016
    Publication date: June 7, 2018
    Inventors: Michael Stephen Wolfe, Michael J. Eiseman, Loretta L. Tam, Cullen Kirkpatrick
  • SEQUENTIAL OXIDATION OF CARBON BLACK FOR INK-JET DISPERSION
    Publication number: 20120222585
    Abstract: A process for preparing self-dispersing pigment dispersion for ink-jet application is provided in which a carbon black pigment is first oxidized in a gaseous phase and subsequently functionalized in an aqueous environment.
    Type: Application
    Filed: December 1, 2010
    Publication date: September 6, 2012
    Applicant: E.I. Du Pont de Nemours and Company
    Inventors: Michael J. Eiseman, Harry Joseph Spinelli, William F. Delgiorno
  • IR transparent cyan inkjet ink
    Patent number: 7524366
    Abstract: The present invention pertains to a cyan dye-based inkjet ink having substantially no absorption in the near-infrared region of the spectrum (near-IR transparent). The invention further pertains to a dye-based inkjet ink set comprising this near-IR transparent cyan ink.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: April 28, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Michael J. Eiseman, Kuo Hsiung Kung
  • IR transparent cyan inkjet ink
    Publication number: 20070263057
    Abstract: The present invention pertains to a cyan dye-based inkjet ink having substantially no absorption in the near-infrared region of the spectrum (near-IR transparent). The invention further pertains to a dye-based inkjet ink set comprising this near-IR transparent cyan ink.
    Type: Application
    Filed: May 4, 2007
    Publication date: November 15, 2007
    Inventors: Michael J. Eiseman, Kuo Hsiung Kung
  • Self-dispersing pigment and process of making and use of same
    Patent number: 6852156
    Abstract: A process is provided in which a pigment is oxidated with ozone in an aqueous environment in which the mixture of ozone, water and pigment is subjected to a dispersive mixing operation; and/or the pH of the mixture is maintained in a range of 6-8, whereby the pigment is self-dispersing and preferably has an acid value of less than 3 ?moles/M2. Pigments from this process and ink jet inks containing the self-dispersing pigments, are also provided.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: February 8, 2005
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: An-Gong Yeh, Michael J. Eiseman, Robert Paul Held, James L. Hohman, Dhiren V. Patel, Yia-Ching Ray, Harry Joseph Spinelli, Sandra L. Witman
  • Self-dispersing pigment and process of making and use of same
    Publication number: 20020014184
    Abstract: A process is provided in which a pigment is oxidated with ozone in an aqueous environment in which the mixture of ozone, water and pigment is subjected to a dispersive mixing operation; and/or the pH of the mixture is maintained in a range of 6-8, whereby the pigment is self-dispersing and preferably has an acid value of less than 3 &mgr;moles/M2. Pigments from this process and ink jet inks containing the self-dispersing pigments, are also provided.
    Type: Application
    Filed: May 23, 2001
    Publication date: February 7, 2002
    Inventors: An-Gong Yeh, Michael J. Eiseman, Robert Paul Held, James L. Hohman, Dhiren V. Patel, Yia-Ching Ray, Harry Joseph Spinelli, Sandra L. Witman