Patents by Inventor Ernest D. Kaufman

Ernest D. Kaufman 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).

  • Delivery of polymeric antiprecipitants in oil wells employing an oil soluble carrier system
    Patent number: 4518511
    Abstract: There is provided a method for treating a subsurface oil field formation penetrated by an oil-producing well bore comprising: injecting into said formation an emulsified, oil soluble polymeric composition of a polymer.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: May 21, 1985
    Assignee: American Cyanamid Company
    Inventors: Ernest D. Kaufman, Robin W. Dexter
  • Process for dewatering sewage sludge
    Patent number: 4191645
    Abstract: Use of a cationic copolymer prepared by incremental addition of a cationic monomer during the polymerization reaction of a nonionic monomer in the dewatering of sewage sludges provides improved performance characteristics.
    Type: Grant
    Filed: December 15, 1977
    Date of Patent: March 4, 1980
    Assignee: American Cyanamid Company
    Inventors: Arthur J. Begala, Jr., Ernest D. Kaufman