Patents by Inventor Scott Matthew Herkimer

Scott Matthew Herkimer 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).

  • Process for manufacturing titanium dioxide pigment having a hydrous oxide coating using a media mill
    Patent number: 5730795
    Abstract: This invention provides a process for making titanium dioxide pigment, wherein an aqueous slurry of hydrous oxide surface-treated TiO.sub.2 particles is subjected to media milling. The TiO.sub.2 particles are surface-treated with a coating comprising a hydrous oxide such as silica and/or alumina, and the slurry is filtered prior to media milling. The milled slurry is dried and the dried product is fluid-energy milled to produce TiO.sub.2 pigment having good particle size distribution. The TiO.sub.2 pigments may be used to make coating formulations having high gloss.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: March 24, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Scott Matthew Herkimer