Patents by Inventor Douglas Rusling

Douglas Rusling 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).

  • Selective flocculation of minerals from a mixture or an ore
    Patent number: 4090955
    Abstract: Modification of a polyacrylamide to provide a content of N-hydroxymethyl groups thereon results in a selective flocculant which is effective in separating mineral values from an ore or mixture.
    Type: Grant
    Filed: May 5, 1976
    Date of Patent: May 23, 1978
    Assignee: American Cyanamid Company
    Inventors: Robin William Dexter, Douglas Rusling