Patents by Inventor Sunita P. Chavan

Sunita P. Chavan 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).

  • Waterfast dyes for ink jet recording fluids
    Patent number: 5425805
    Abstract: An ink jet ink composition comprises a liquid vehicle, a dye, and an N-hydroxyalkyl branched polyethyleneimine polymer or an N-hydroxyalkyl diphenylguanidine substituted at about 80% of the available nitrogens. The dye in this ink jet composition decreases the solubility of the ink and, therefore, can be used to formulate waterfast inks for ink jet printers.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: June 20, 1995
    Assignee: Scitex Digital Printing, Inc.
    Inventors: Raouf Botros, Sunita P. Chavan
  • Recording liquids for ink-jet recording
    Patent number: 5378269
    Abstract: A recording liquid for ink-jet recording comprising coloring matter, which is an image-forming component, and a liquid medium for dissolving the coloring matter therein. The liquid medium is ethanol and the coloring matter is a dye represented by the following general formula (A): ##STR1## or the following general formula (B): ##STR2## as an image-forming component.
    Type: Grant
    Filed: December 29, 1993
    Date of Patent: January 3, 1995
    Assignee: Scitex Digital Printing, Inc.
    Inventors: Louis J. Rossi, Sunita P. Chavan
  • Ink-jet recording liquids
    Patent number: 5334435
    Abstract: A recording liquid for ink-jet recording comprising coloring matter, which is an image-forming component, and a liquid medium for dissolving the coloring matter therein. The liquid medium is ethanol and the coloring matter is a dye represented by the following general formula (A): ##STR1## or the following general formula (B): ##STR2## as an image-forming component.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: August 2, 1994
    Assignee: Eastman Kodak Company
    Inventors: Louis J. Rossi, Sunita P. Chavan