Patents by Inventor Ralph E. Turner

Ralph E. Turner 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).

  • Method for producing high opacifying kaolin pigment
    Patent number: 5047375
    Abstract: A method of producing a high opacity paper filler pigment which comprises subjecting an iron-stained titania-containing kaolin to beneficiation by froth flotation or high intensity magnetic separation; recovering the froth or magnet rejects, dewatering and drying the rejects to produce a kaolin enriched in titania, and calcining the same at a temperature in the range of about 1500.degree. to about 2200.degree. F.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: September 10, 1991
    Assignee: ECC America Inc.
    Inventors: Weyman Dunaway, Ralph E. Turner