Patents by Inventor P. K. Sujeeth

P. K. Sujeeth 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).

  • INKS COMPRISING MODIFIED PIGMENTS AND METHODS FOR MAKING AND USING THE SAME
    Publication number: 20080121138
    Abstract: An ink composition that includes a self-dispersing pigment that has about 0.02 to about 1.0 mMoles of S and about 0.2 to about 2.0 mMoles of active hydrogen per gram of pigment, water, and an organic solvent. A method of making an ink composition that includes sulfonating a pigment, subsequently oxidizing the pigment to produce a modified pigment, and incorporating the modified pigment into an ink.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 29, 2008
    Applicant: SENSIENT COLORS INC.
    Inventors: Jeff Kennedy, Diane V. Graff, Daniel F. Gloster, Michael Bogomolny, P. K. Sujeeth, Ryan R. Cross
  • MODIFIED PIGMENTS AND METHODS FOR MAKING AND USING THE SAME
    Publication number: 20080115695
    Abstract: A method of producing a modified pigment by sulfonating a pigment and subsequently oxidizing the pigment. The modified pigment may have sulfonic acid and carboxyl surface modifying groups attached to the surface of the pigment. Charge balancing counterions such as alkali metals, alkaline earth metals and NR1R2R3H+, where R1, R2 and R3 are independently H or C1-C5 alkyl groups, may be associated with the surface modifying groups. The modified pigment is combined with water to produce a dispersion that can be used in such applications as coatings, paints, papers, adhesives, latexes, toners, textiles, fibers, plastics and inks.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 22, 2008
    Applicant: SENSIENT COLORS INC.
    Inventors: P. K. Sujeeth, Mark Ulrich, Gabe Srouji, John Kane, Daniel A. Ouellette