Patents by Inventor Nate R. Schwartz

Nate R. Schwartz 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).

  • Black ink jet ink composition
    Patent number: 5803958
    Abstract: Provided is a black ink jet ink which exhibits excellent non-fading properties. The ink jet ink is comprised of water, carbon black, cyan and magenta pigments, a water immiscible organic compound exhibiting a high boiling point, and a water miscible compound. The combination of the water immiscible compound and the water miscible compound provides for excellent anti-crusting properties.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: September 8, 1998
    Assignee: Rexam Graphics Inc.
    Inventors: Boris Joseph Katsen, Richard S. Himmelwright, Nate R. Schwartz, Barbara Jones Stewart
  • Ink jet ink composition
    Patent number: 5746817
    Abstract: Provided is an ink jet ink comprised of water, pigment, a water immiscible organic compound exhibiting a high boiling point, and a water miscible compound. The combination of the water immiscible compound and the water miscible compound provides for excellent anti-crusting properties, and provides an ink which upon printing makes a round dot, and which printed images exhibit excellent waterfastness, lightfastness and wet rub resistance.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: May 5, 1998
    Assignee: Rexam Graphics Inc.
    Inventors: Boris Joseph Katsen, Richard S. Himmelwright, Barbara Jones Stewart, Nate R. Schwartz