Patents by Inventor James P. Easterly, Jr.

James P. Easterly, Jr. 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).

  • Coal liquor clarification with water-soluble, high molecular weight polymers having low concentration of cationic moieties
    Patent number: 4676913
    Abstract: Coal liquors are clarified by contacting them with high molecular weight copolymers of from about 70 to about 99 mole percent of a nonionic water-soluble monomer such as acrylamide and from 1 to 30 mole percent of a cationic monomer such as methacryloylethyl trimethyl ammonium chloride or methacrylamidopropyl trimethyl ammonium chloride.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: June 30, 1987
    Assignee: The Dow Chemical Company
    Inventors: James P. Easterly, Jr., William C. Foshee, Jack C. Lamphere
  • Self-inverting water-in-oil emulsions of water-soluble polymers
    Patent number: 4525496
    Abstract: A water-in-oil emulsion of a water-soluble polymer such as acrylamide/acrylic acid copolymer having improved invertibility is prepared by (1) adding a portion of an inverting surfactant such as sorbitan trioleate having 20 polyoxyethylene units to a water-in-oil emulsion of water-soluble monomer, (2) polymerizing the monomer and (3) adding a remaining amount of inverting surfactant to the emulsion.
    Type: Grant
    Filed: July 17, 1981
    Date of Patent: June 25, 1985
    Assignee: The Dow Chemical Company
    Inventors: Timothy J. Adaway, Harold G. Fravel, Jr., James P. Easterly, Jr.
  • Water-in-oil emulsions of water-soluble cationic polymers having improved stability
    Patent number: 4464508
    Abstract: Water-in-oil emulsions of water-soluble cationic polymers, e.g., a copolymer of acrylamide and acryloylethyl trimethyl ammonium chloride, exhibiting improved emulsion stability are prepared by incorporating a water-soluble salt of a monovalent anion, e.g., ammonium chloride, into the aqueous phase at some point prior to polymerization.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: August 7, 1984
    Assignee: The Dow Chemical Company
    Inventor: James P. Easterly, Jr.