Patents by Inventor Jay Donald

Jay Donald 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).

  • Flocculation of particles by polymers that precipitate out of solution
    Patent number: 4696750
    Abstract: A process for flocculating solid fines from a solution comprising said solid fines and an organic liquid which comprises the steps of: (a) adding with mixing about 100 to about 500 ppm of an unneutralized or neutralized sulfonated polystyrene to said solution of solid fines; and (b) adding with mixing about 5 to about 25 weight percent of an antisolvent to the mixture of the sulfonated polystyrene and said solution of said solid fines.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: September 29, 1987
    Assignee: Exxon Research and Engineering Company
    Inventor: Jay Donald