Patents by Inventor Frances K. Tyler

Frances K. Tyler 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).

  • Patent number: 6139617
    Abstract: There are provided titanium dioxide pigments characterized by improved gloss developing and dispersibility properties in surface coating vehicles and reduced dispersant requirements. Said titanium dioxide pigments comprise pigmentary titanium dioxide particles having deposited thereon a treating agent comprising at least one amine salt of a monoprotic.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: October 31, 2000
    Assignee: Kerr-McGee Chemical LLC
    Inventors: John E. Halko, Frances K. Tyler, David A. Doherty