Patents by Inventor Susan T. Soward

Susan T. Soward 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).

  • 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