Patents by Inventor Marcel B. Madaras

Marcel B. Madaras 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).

  • Ink jet ink containing multimetallic polymeric colorants
    Patent number: 7449500
    Abstract: The invention relates to an ink composition containing a multimetallic oligomeric or polymeric azo colorant wherein the colorant is derived from the polymerization reaction of a polyvalent metal cation with a dimeric tridentate ligand containing a coordinating azo group.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: November 11, 2008
    Assignee: Eastman Kodak Company
    Inventors: Mihaela L. Madaras, Steven Evans, Marcel B. Madaras, David T. Southby
  • Solubilized yellow dyes for inks with improved ozone and light stability
    Patent number: 7066992
    Abstract: The invention relates to an ink composition comprising solubilized yellow dyes for inks with improved ozone and light stability.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: June 27, 2006
    Assignee: Eastman Kodak Company
    Inventors: Joan C. Potenza, Marcel B. Madaras, Hans F. Schmitthenner, David T. Southby, Mihaela L. Madaras
  • Solubilized dyes for inks
    Patent number: 7056375
    Abstract: This invention relates to an ink composition comprising a dye represented by Formula I: wherein R1 is independently a non-metallic substituent; s is 0, 1, 2, 3, or 4; R2 is hydrogen or a non-metallic substituent; R3 is a substituted or unsubstituted aromatic or heterocyclic group with the proviso that if R3 is a quinoline moiety, the azo group is not bonded to the 5, 6, 7 or 8 position of the quinoline ring; wherein the dye must bear at least one ionizable group that is capable of imparting water solubility to the dye. It also relates to dyes which comprise a specific subset of the above dyes.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: June 6, 2006
    Assignee: Eastman Kodak Company
    Inventors: Joan C. Potenza, Marcel B. Madaras, Hans F. Schmitthenner, David T. Southby