Patents by Inventor Joseph D. Gifford

Joseph D. Gifford 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).

  • In-situ delivery systems for reaction product abatement in electrochemical cells
    Patent number: 10800678
    Abstract: An electrochlorination system comprising an electrochemical cell including a housing having an inlet, an outlet, and an anode-cathode pair disposed within the housing, a source of a chloride-containing aqueous solution having an outlet fluidly connectable to the inlet of the electrochemical cell, and a source of an oxidizing agent fluidly connectable to the source of chloride-containing aqueous solution upstream of the electrochemical cell.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: October 13, 2020
    Assignee: Evoqua Water Technologies LLC
    Inventors: Joseph D. Gifford, Joshua Griffis, Simon P. Dukes, Li-Shiang Liang, Michael J. Shaw, Frederick C. Wilkins
  • In-situ delivery systems for reaction product abatement in electrochemical cells
    Publication number: 20180257961
    Abstract: An electrochlorination system comprising an electrochemical cell including a housing having an inlet, an outlet, and an anode-cathode pair disposed within the housing, a source of a chloride-containing aqueous solution having an outlet fluidly connectable to the inlet of the electrochemical cell, and a source of an oxidizing agent fluidly connectable to the source of chloride-containing aqueous solution upstream of the electrochemical cell.
    Type: Application
    Filed: September 16, 2016
    Publication date: September 13, 2018
    Inventors: Joseph D. Gifford, Joshua Griffis, Simon P. Dukes, Li-Shiang Liang, Michael J. Shaw, Frederick C. Wilkins
  • Apparatus and Methods to Recover Media from an Activated Iron Process
    Publication number: 20180201529
    Abstract: Systems and methods for treating wastewater are disclosed. Zero valent iron media may be used in a moving packed bed reactor. A media recovery system may return media to the reactor.
    Type: Application
    Filed: October 31, 2014
    Publication date: July 19, 2018
    Inventors: Simon Paul Dukes, Michael W. Wismer, Frank L. Sassaman, Joseph D. Gifford, Adam Szczesniak
  • Cross-flow electrochemical separation devices and methods of assembling same
    Patent number: 9782725
    Abstract: Electrochemical purification apparatuses for treating water and methods of assembling the devices are provided. The apparatuses may be cross-flow electrochemical devices. The devices may be assembled and sealed through masking and application of a potting material. The devices may comprise various structures configured to improve the current efficiency of the device, reduce leakage, and improve the distribution of potting material to the assembly.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: October 10, 2017
    Assignee: Evoqua Water Technologies LLC
    Inventors: Li-Shiang Liang, Joseph D. Gifford, Vivian Leow Hwee Teng, Keng Hoo Yeo, Chin Hiang Tan
  • Systems and methods for water treatment
    Patent number: 9637400
    Abstract: Electrochemical devices and methods for water treatment are disclosed. An electrodeionization device (100) may include one or more compartments (110) containing an ionselective media, such as boron-selective resin (170). Cyclic adsorption of target ions and regeneration of the media in-situ is used to treat process water, and may be driven by the promotion of various pH conditions within the electrochemical device.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: May 2, 2017
    Inventors: Evgeniya Freydina, Joseph D. Gifford
  • Low scale potential water treatment
    Patent number: 9586842
    Abstract: An electrochemical treating device having low scale potential is disclosed. The device has a variety of configurations directed to the layering of the anionic exchange and cationic exchange. The treatment device can also comprise unevenly sized ion exchange resin beads and/or have at least one compartment that provides a dominating resistance that results in a uniform current distribution throughout the apparatus.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: March 7, 2017
    Inventors: Joseph D. Gifford, John W. Arba, Evgeniya Freydina, Anil Jha, Li-Shiang Liang, Lu Wang
  • Electrodesalination system and method
    Patent number: 9556044
    Abstract: Systems and methods for the desalination of seawater or brackish water for the purpose of obtaining potable water. Systems may include a combination of electrodialysis and electrodeionization modules. The system configuration and process controls may achieve low energy consumption and stable operation.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: January 31, 2017
    Inventors: Rongqiang Fu, Kee Hoe Ng, Joseph D. Gifford, George Y. Gu, Li-Shiang Liang, Michael J. Shaw
  • Electrical purification apparatus having a blocking spacer
    Patent number: 9463988
    Abstract: An electrical purification apparatus and methods of making same are disclosed. The electrical purification apparatus may provide for increases in operation efficiencies, for example, with respect to current efficiencies and membrane utilization.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: October 11, 2016
    Assignee: Evoqua Water Technologies Pte. Ltd
    Inventors: Li-Shiang Liang, Joseph D. Gifford, Lawrence J. Salvo, John K. Chan
  • Methods of making a cell stack for an electrical purification apparatus
    Patent number: 9463987
    Abstract: An electrical purification apparatus and methods of making same are disclosed. The electrical purification apparatus may provide for increases in operation efficiencies, for example, with respect to current efficiencies and membrane utilization.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: October 11, 2016
    Assignee: Evoqua Water Technologies Pte. Ltd
    Inventors: Li-Shiang Liang, Joseph D. Gifford, John K. Chan, Lawrence J. Salvo
  • LOW SCALE POTENTIAL WATER TREATMENT
    Publication number: 20160115046
    Abstract: An electrochemical treating device having low scale potential is disclosed. The device has a variety of configurations directed to the layering of the anionic exchange and cationic exchange. The treatment device can also comprise unevenly sized ion exchange resin beads and/or have at least one compartment that provides a dominating resistance that results in a uniform current distribution throughout the apparatus.
    Type: Application
    Filed: December 2, 2015
    Publication date: April 28, 2016
    Inventors: Joseph D. Gifford, John W. Arba, Evgeniya Freydina, Anil Jha, Li-Shiang Liang, Lu Wang
  • Electrical purification apparatus
    Patent number: 9227858
    Abstract: An electrical purification apparatus and methods of making same are disclosed. The electrical purification apparatus may provide for increases in operation efficiencies, for example, with respect to current efficiencies and membrane utilization.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: January 5, 2016
    Assignee: Evoqua Water Technologies Pte Ltd.
    Inventors: Li-Shiang Liang, Joseph D. Gifford, John K. Chan, Lawrence J. Salvo
  • ELECTRODESALINATION SYSTEM AND METHOD
    Publication number: 20150299003
    Abstract: Systems and methods for the desalination of seawater or brackish water for the purpose of obtaining potable water. Systems may include a combination of electrodialysis and electrodeionization modules. The system configuration and process controls may achieve low energy consumption and stable operation.
    Type: Application
    Filed: June 30, 2015
    Publication date: October 22, 2015
    Inventors: Rongqiang Fu, Kee Hoe Ng, Joseph D. Gifford, George Y. Gu, Li-Shiang Liang, Michael J. Shaw
  • Method of providing a source of potable water
    Patent number: 9138689
    Abstract: An electrical purification apparatus and methods of making same are disclosed. The electrical purification apparatus may provide for increases in operation efficiencies, for example, with respect to current efficiencies and membrane utilization.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: September 22, 2015
    Assignee: Evoqua Water Technologies Pte. Ltd.
    Inventors: Li-Shiang Liang, Joseph D. Gifford, John K. Chan, Lawrence J. Salvo
  • LOW SCALE POTENTIAL WATER TREATMENT
    Publication number: 20150225268
    Abstract: An electrochemical treating device having low scale potential is disclosed. The device has a variety of configurations directed to the layering of the anionic exchange and cationic exchange. The treatment device can also comprise unevenly sized ion exchange resin beads and/or have at least one compartment that provides a dominating resistance that results in a uniform current distribution throughout the apparatus.
    Type: Application
    Filed: February 13, 2015
    Publication date: August 13, 2015
    Applicant: EVOQUA WATER TECHNOLOGIES LLC
    Inventors: Joseph D. Gifford, John W. Arba, Evgeniya Freydina, Anil D. Jha, Li-Shiang Liang, Lu Wang
  • SYSTEMS AND METHODS FOR WATER TREATMENT
    Publication number: 20150166375
    Abstract: Electrochemical devices and methods for water treatment are disclosed. An electrodeionization device (100) may include one or more compartments (110) containing an ionselective media, such as boron-selective resin (170). Cyclic adsorption of target ions and regeneration of the media in-situ is used to treat process water, and may be driven by the promotion of various pH conditions within the electrochemical device.
    Type: Application
    Filed: February 26, 2015
    Publication date: June 18, 2015
    Inventors: Evgeniya Freydina, Joseph D. Gifford
  • ELECTRICAL PURIFICATION APPARATUS HAVING A BLOCKING SPACER
    Publication number: 20150122657
    Abstract: An electrical purification apparatus and methods of making same are disclosed. The electrical purification apparatus may provide for increases in operation efficiencies, for example, with respect to current efficiencies and membrane utilization.
    Type: Application
    Filed: January 16, 2015
    Publication date: May 7, 2015
    Inventors: Li-Shiang Liang, Joseph D. Gifford, Lawrence J. Salvo, John K. Chan
  • Low scale potential water treatment
    Patent number: 9023185
    Abstract: An electrochemical treating device having low scale potential is disclosed. The device has a variety of configurations directed to the layering of the anionic exchange and cationic exchange. The treatment device can also comprise unevenly sized ion exchange resin beads and/or have at least one compartment that provides a dominating resistance that results in a uniform current distribution throughout the apparatus.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: May 5, 2015
    Assignee: Evoqua Water Technologies LLC
    Inventors: Joseph D. Gifford, John W. Arba, Evgeniya Freydina, Anil D. Jha, Li-Shiang Liang, Lu Wang
  • Systems and methods for water treatment
    Patent number: 9011660
    Abstract: Electrochemical devices and methods for water treatment are disclosed. An electrodeionization device (100) may include one or more compartments (110) containing an ionselective media, such as boron-selective resin (170). Cyclic adsorption of target ions and regeneration of the media in-situ is used to treat process water, and may be driven by the promotion of various pH conditions within the electrochemical device.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: April 21, 2015
    Assignee: Evoqua Water Technologies LLC
    Inventors: Evgeniya Freydina, Joseph D. Gifford
  • Electrical purification apparatus having a blocking spacer
    Patent number: 8956521
    Abstract: An electrical purification apparatus and methods of making same are disclosed. The electrical purification apparatus may provide for increases in operation efficiencies, for example, with respect to current efficiencies and membrane utilization.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: February 17, 2015
    Assignee: Evoqua Water Technologies LLC
    Inventors: Li-Shiang Liang, Joseph D. Gifford, John K. Chan, Lawrence J. Salvo
  • Electrodesalination System and Method
    Publication number: 20140183045
    Abstract: Systems and methods for the desalination of seawater or brackish water for the purpose of obtaining potable water. Systems may include a combination of electrodialysis and electrodeionization modules. The system configuration and process controls may achieve low energy consumption and stable operation.
    Type: Application
    Filed: June 29, 2012
    Publication date: July 3, 2014
    Applicant: Siemens Water Technologies LLC
    Inventors: Rongqiang Fu, Joseph D. Gifford, George Y. Gu, Li-Shiang Liang, Kee Hoe Ng, Michael J. Shaw