Patents by Inventor Kalpathy R. Anantharaman

Kalpathy R. Anantharaman 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).

  • Methods for production of pigment dispersion
    Patent number: 6767397
    Abstract: Disclosed is a process for the preparation of a pigment dispersion starting with a tank flushed pigment that is continuously fed into a twin screw extruder, washed and dried by vacuum to get a desirable product.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: July 27, 2004
    Assignee: Sun Chemical Corporation
    Inventors: Kalpathy R. Anantharaman, Michael L. Lewis, Pat Galioto
  • Methods for production of pigment dispersion
    Publication number: 20030188664
    Abstract: Disclosed is a process for the preparation of a pigment dispersion starting with a tank flushed pigment that is continuously fed into a twin screw extruder, washed and dried by vacuum to get a desirable product.
    Type: Application
    Filed: April 5, 2002
    Publication date: October 9, 2003
    Inventors: Kalpathy R. Anantharaman, Michael L. Lewis, Pat Galioto
  • High strength pigments for printing inks
    Patent number: 4793863
    Abstract: Organic pigments especially suitable in the manufacture of printing inks. The pigments are prepared with relatively high concentrations of resins or rosins which are reacted with controlled amounts of an aluminum salt to obtain aluminum resinates or aluminum rosinates. The resulting resinated pigmentary compositions are characterized by high strength, better transparency, good rheology without loss of coloristic properties.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: December 27, 1988
    Assignee: Sun Chemical Corporation
    Inventors: Kalpathy R. Anantharaman, Susan T. Soward, Wilmeth M. Smoot