Patents by Inventor Vincent F. D'Agostino

Vincent F. D'Agostino 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).

  • Patent number: 6387964
    Abstract: A monomer-grafted cross-linked polymer is prepared by the steps of activating a polymer by radiation, quenching the activated polymer so as to effect cross-linking therein, activating the cross-linked polymer by irradiation and contacting the activated cross-linked polymer with an emulsion that includes an unsaturated monomer, an emulsifier and water. The activated cross-linked polymer is contacted with the emulsion for a sufficient time to effect a desired extent of grafting.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: May 14, 2002
    Assignee: International Power PLC
    Inventors: Vincent F. D'Agostino, John Michael Newton
  • Patent number: 6225368
    Abstract: A monomer-grafted cross-linked polymer is prepared by the steps of activating a polymer by radiation, quenching the activated polymer so as to effect cross-linking therein, activating the cross-linked polymer by irradiation and contacting the activated cross-linked polymer with an emulsion that includes an unsaturated monomer, an emulsifier and water. The activated cross-linked polymer is contacted with the emulsion for a sufficient time to effect a desired extent of grafting.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: May 1, 2001
    Assignee: National Power PLC
    Inventors: Vincent F. D'Agostino, John Michael Newton
  • Patent number: 5830921
    Abstract: A modified polymeric cation exchange membrane for use in an electrochemical cell, the said membrane having a salt selected from the group consisting of silver, tungsten, molybdenum and a mixture thereof deposited within the polymer matrix, the said salt being insoluble in the electrolytes which, in use, contact either side of the membrane.The membranes are of particular use in electrochemical cells and combine a low electrolytic resistivity with a high permselectivity.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: November 3, 1998
    Assignee: National Power PLC
    Inventors: Graham Edward Cooley, Vincent F. D'Agostino
  • Patent number: 5705534
    Abstract: A method of preparing a modified cation exchange membrane in which a sulfide of silver, tungsten, molybdenum or a mixture thereof is deposited within the polymer matrix, which method comprises the steps of:i) forming within the polymer matrix of the membrane a complex of silver, tungsten, molybdenum or a mixture thereof with a water soluble compound containing an --SH group; andii) converting the complex formed in step (i) into the insoluble sulfide of silver, tungsten, molybdenum or a mixture thereof.
    Type: Grant
    Filed: June 4, 1996
    Date of Patent: January 6, 1998
    Assignee: National Power plc
    Inventors: Vincent F. D'Agostino, Graham Edward Cooley, John Michael Newton, Karel Bouchal
  • Patent number: 5626731
    Abstract: A modified polymeric cation exchange membrane for use in an electrochemical cell, the membrane having a salt selected from the group consisting of silver, tungsten, molybdenum and a mixture thereof deposited within the polymer matrix, the salt being insoluble in the electrolytes which, in use, contact either side of the membrane.The membranes are of particular use in electrochemical cells and combine a low electrolytic resistivity with a high permselectivity.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: May 6, 1997
    Assignee: National Power PLC
    Inventors: Graham E. Cooley, Vincent F. D'Agostino
  • Patent number: 4543169
    Abstract: A method is described for precious metal recovery from acidic precious metal-cyanide solutions by means of a weakly-basic anion-exchange material comprising a polymeric felt incorporating radiation-grafted pyridinyl functional groups.
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: September 24, 1985
    Assignee: RAI Research Corporation
    Inventors: Vincent F. D'Agostino, Joseph Y. Lee, Stephen Zapisek, George Schore
  • Patent number: 4500396
    Abstract: A method is described for metal recovery from basic ammoniated metal solutions by means of a weakly-acidic cation-exchange material comprising a polymeric felt incorporating radiation-grafted monomers comprising carboxylic acid functional groups.
    Type: Grant
    Filed: January 26, 1984
    Date of Patent: February 19, 1985
    Inventors: Vincent F. D'Agostino, Joseph Y. Lee, Stephen Zapisek, George Schore
  • Patent number: 4468441
    Abstract: This disclosure is directed to improved redox type electrochemical cells, preferably those of the iron (+3)/iron (+2) or chromium (+3)/iron (+2) electrolyte variety, incorporating polymeric, ion-exchange separator membranes produced by radiation grafting techniques.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: August 28, 1984
    Assignee: RAI Research Corp.
    Inventors: Vincent F. D'Agostino, Joseph Y. Lee
  • Patent number: 4414090
    Abstract: This disclosure is directed to improved redox type electrochemical cells, preferably those of the iron (+3)/iron (+2) electrolyte variety, incorporating polymeric, ion-exchange separator membranes produced by radiation grafting techniques.
    Type: Grant
    Filed: October 1, 1981
    Date of Patent: November 8, 1983
    Assignee: RAI Research Corporation
    Inventors: Vincent F. D'Agostino, Joseph Y. Lee
  • Patent number: 4339473
    Abstract: This invention relates to an irradiation grafting process for preparing separator membranes for use in electrochemical cells, comprising contacting a polymeric base film with an aqueous solution of a hypophilic monomer and a polymerization retardant; and irradiating, said contacted film to form a graft membrane having low electrical resistivity and having monomer molecules uniformly grafted thereon.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: July 13, 1982
    Assignee: Rai Research Corporation
    Inventors: Vincent F. D'Agostino, Joseph Y. Lee
  • Patent number: 4230549
    Abstract: This disclosure is directed to polymer membranes to be used in electrochemical cells and improved processes for producing the same. The membranes are produced by radiation grafting techniques. The improved process includes the grafting of a hydrophilic monomer, such as methacrylic acid in a chlorinated organic solvent onto an inert base film such as polyethylene. The process also includes but is not limited to the use of inhibitors to limit homopolymerization of a grafting material, as well as emulsifying agents to lower the electrolytic resistance of the finished membrane.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: October 28, 1980
    Assignee: RAI Research Corporation
    Inventors: Vincent F. D'Agostino, Joseph Y. Lee, Joseph C. Sentisi
  • Patent number: 4113922
    Abstract: This disclosure is directed to fluorocarbon polymers, polymeric membranes, and electrochemical cells and processes. The polymers and membranes are produced by radiation techniques to provide improved products. For example, .alpha.,.beta.,.beta.-trifluorostyrene in an inert organic solvent is grafted onto an inert film, such as tetrafluoroethylene-hexafluoropropylene copolymer, by irradiation, i.e. with Co-60 gamma radiation at a dose of several Mrad. The grafted film is then sulfonated, preferably in a chlorosulfonic acid bath. The resulting film is useful as a membrane or diaphragm in various electrochemical cells such as chlor-alkali or fuel cells.
    Type: Grant
    Filed: November 10, 1977
    Date of Patent: September 12, 1978
    Assignees: Hooker Chemicals & Plastics Corp., RAI Research Corporation
    Inventors: Vincent F. D'Agostino, Joseph Y. Lee, Edward H. Cook, Jr.
  • Patent number: 4107005
    Abstract: This disclosure is directed to fluorocarbon polymers, polymeric membranes, and electrochemical cells and processes. The polymers and membranes are produced by radiation techniques to provide improved products. For example, .alpha., .beta., .beta.-trifluorostyrene in an inert organic solvent is grafted onto an inert film, such as tetrafluoroethylene-hexafluoropropylene copolymer, by irradiation, i.e. with Co-60 gamma radiation at a dose of several Mrad. The grafted film is then sulfonated, preferably in a chlorosulfonic acid bath. The resulting film is useful as a membrane or diaphragm in various electrochemical cells such as chlor-alkali or fuel cells.
    Type: Grant
    Filed: November 11, 1976
    Date of Patent: August 15, 1978
    Assignees: Hooker Chemicals & Plastics Corporation, RAI Research Corporation
    Inventors: Vincent F. D'Agostino, Joseph Y. Lee, Edward H. Cook, Jr.
  • Patent number: 4012303
    Abstract: This disclosure is directed to fluorocarbon polymers, polymeric membranes, and electrochemical cells and processes. The polymers and membranes are produced by radiation techniques to provide improved products. For example, .alpha.,.beta.,.beta.-trifluorostyrene in an inert organic solvent is grafted onto an inert film, such as tetrafluoroethylene-hexafluoropropylene copolymer, by irradiation, i.e. with Co-60 gamma radiation at a dose of several Mrad. The grafted film is then sulfonated, preferably in a chlorosulfonic acid bath. The resulting film is useful as a membrane or diaphragm in various electrochemical cells such as chlor-alkali or fuel cells.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: March 15, 1977
    Assignees: Hooker Chemicals & Plastics Corporation, RAI Research Corporation
    Inventors: Vincent F. D'Agostino, Joseph Y. Lee, Edward H. Cook, Jr.
  • Patent number: RE31824
    Abstract: This disclosure is directed to polymer membranes to be used in electrochemical cells and improved processes for producing the same. The membranes are produced by radiation grafting techniques. The improved process includes the grafting of a hydrophilic monomer, such as methacrylic acid in a chlorinated organic solvent onto an inert base film such as polyethylene. The process also includes but is not limited to the use of inhibitors to limit homopolymerization of a grafting material, as well as emulsifying agents to lower the electrolytic resistance of the finished membrane.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: February 5, 1985
    Assignee: RAI Research Corporation
    Inventors: Vincent F. D'Agostino, Joseph Y. Lee, Joseph C. Sentisi