Patents by Inventor Loretta L. TAM

Loretta L. TAM 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
    Patent number: 10351708
    Abstract: This invention pertains to self-dispersing pigment dispersions. The self-dispersing pigments are modified with a multivalent cation and an anionic polymer.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: July 16, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Michael Stephen Wolfe, Charles T. Berge, 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
  • CATIONIC MODIFIED SELF-DISPERSING PIGMENT DISPERSIONS
    Publication number: 20180134896
    Abstract: This invention pertains to self-dispersing pigment dispersions. The self-dispersing pigments are modified with a multivalent cation and an anionic polymer.
    Type: Application
    Filed: April 27, 2016
    Publication date: May 17, 2018
    Inventors: Michael Stephen WOLFE, Charles T. BERGE, Loretta L. TAM, Cullen KIRKPATRICK