Patents by Inventor Neil T. Doidge

Neil T. Doidge 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).

  • Organoclays
    Patent number: 4743305
    Abstract: An organoclay is prepared by mixing a quaternary ammonium compound with an aqueous suspension of a smectite clay in proportions such that there are present from 75 to 110 milliequivalents of quaternary ammonium cation per 100 g of dry smectite clay, thereafter subjecting the smectite clay/quaternary ammonium compound/water mixture to high shear mixing for a time sufficient to dissipate in the mixture at least 100 KJ of energy per kg. of dry solids in the mixture; and then dewatering the product thus obtained.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: May 10, 1988
    Assignee: ECC International Limited
    Inventors: Neil T. Doidge, Howard Goodman, Andrew R. Fugler