Patents by Inventor Mitchell R. Gibbs

Mitchell R. Gibbs 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).

  • Coating pigment for ink-jet printing
    Patent number: 5997625
    Abstract: A coating pigment composition comprising a hydrous clay, a caustic leached calcined clay, and a porous mineral provides a coating having excellent balance of color intensity and color definition characteristics when printed on by multicolored inks. The pigments of this invention offer a low cost alternative to conventional silica-based coatings in addition to affording other desirable benefits such as improved rheology, less required coat weights, and higher coating solids compared to conventional silica coatings.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: December 7, 1999
    Assignee: Engelhard Corporation
    Inventors: Michael G. Londo, Ahmad Moini, Mitchell R. Gibbs, Stephanie F. Greene