Patents by Inventor Daniel E. Maloney

Daniel E. Maloney 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).

  • Electrochemical cell
    Patent number: 4444638
    Abstract: A process and cell for electrolysis of alkali metal halides, especially sodium chloride, are described, wherein the anolyte and catholyte compartments are separated by a fluorinated ion-exchange membrane whose surface facing the catholyte compartment is of a polymer having carboxylic functionality and which has a roughness which does not exceed 1.5 microns. Such a cell and process operate at high current efficiency, low voltage and low power consumption.
    Type: Grant
    Filed: May 5, 1982
    Date of Patent: April 24, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Daniel E. Maloney
  • Electrolysis process
    Patent number: 4349422
    Abstract: A process and cell for electrolysis of alkali metal halides, especially sodium chloride, are described, wherein the anolyte and catholyte compartments are separated by a fluorinated ion-exchange membrane whose surface facing the catholyte compartment is of a polymer having carboxylic functionality and which has a roughness which does not exceed 1.5 microns. Such a cell and process operate at high current efficiency, low voltage and low power consumption.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: September 14, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Daniel E. Maloney
  • Heat-treated fluorocarbon sulfonamide cation exchange membrane and process therefor
    Patent number: 4168216
    Abstract: An ion exchange membrane of a fluorinated polymer which contains sulfonyl groups, wherein the sulfonyl groups on one surface of the membrane are in the form of N-monosubstituted sulfonamide groups formed from a di- or polyamine, is treated by heating at a temperature of 100.degree. to 160.degree. C. for a time of at least 15 minutes. The resulting membrane is useful as the membrane in a chloralkali electrolysis cell, and permits operation of such cells at high current efficiency over extended periods of time.
    Type: Grant
    Filed: September 27, 1978
    Date of Patent: September 18, 1979
    Assignees: Diamond Shamrock Corporation, E. I. Du Pont de Nemours and Company
    Inventors: Samuel F. Burkhardt, Daniel E. Maloney