Patents by Inventor Ana Estela Diaz

Ana Estela Diaz 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).

  • Fluid energy mill
    Patent number: 6145765
    Abstract: An improved fluid energy mill having a curved-shaped insert having a leading edge and a trailing edge with an azimuthal angle of between 10.degree. and 300.degree. and a positive or zero angle of attack is disclosed. This mill provides for lower energy consumption while improving or maintaining product specifications, and improved production rates.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: November 14, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: William Edward Capelle, Jr., John Donald Connolly, Jr., Stephan Claude De La Veaux, Ana Estela Diaz, John Phillip Lanci, Sr., George Alan Schurr
  • Refractory compositions for use in fluid bed chlorinators
    Patent number: 5807798
    Abstract: This invention provides new refractory binder compositions comprising silica and titania which can be used to make ceramic bodies, particularly bricks. The refractory binder compositions comprise about 70 to about 92 wt. % silica (SiO.sub.2) and about 8 to about 30% titania (TiO.sub.2). The refractory binder compositions may further comprise alumina and a metal oxide selected from the group consisting of calcium oxide, strontium oxide, and sodium oxide, and mixtures thereof. The refractory ceramic bodies can be used in hot corrosive/erosive environments such as in fluid bed chlorinators in the manufacture of titanium dioxide.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: September 15, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Davis Bolt, Ana Estela Diaz, Kurt Richard Mikeska