Patents by Inventor Keng Hoo Yeo

Keng Hoo Yeo 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).

  • 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
  • Cross-Flow Electrochemical Separation Devices and Methods of Assembling Same
    Publication number: 20160346737
    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: Application
    Filed: April 2, 2015
    Publication date: December 1, 2016
    Inventors: Li-Shiang Liang, Gifford D. Joseph, Vivian Leow Hwee Teng, Keng Hoo Yeo, Chin Hiang Tan
  • Flow distributors for electrochemical separation
    Patent number: 9481585
    Abstract: An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: November 1, 2016
    Assignee: Evoqua Water Technologies Pte. Ltd
    Inventors: Li-Shiang Liang, Keng Hoo Yeo, Zhee Min Jimmy Yong
  • Techniques for promoting current efficiency in electrochemical separation systems and methods
    Patent number: 9446971
    Abstract: An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: September 20, 2016
    Assignee: Evoqua Water Technologies Pte. Ltd
    Inventors: Li-Shiang Liang, Keng Hoo Yeo, Lawrence J. Salvo
  • Systems and techniques for electrodialysis
    Patent number: 9422176
    Abstract: Electrochemical separation devices are configured for lower energy consumption. Techniques for reducing shadow effect may involve providing distance between a spacer screen and an adjacent ion-selective membrane. A spacer having a screen that is thin relative to a surrounding frame may be used. Mild pressure may also be applied to a compartment to promote distance between a spacer screen and an adjacent ion-selective membrane.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: August 23, 2016
    Assignee: Evoqua Water Technologies Pte. Ltd.
    Inventors: Kee Hoe Ng, Rongqiang Fu, Li-Shiang Liang, Zhee Min Jimmy Yong, Keng Hoo Yeo
  • TECHNIQUES FOR PROMOTING CURRENT EFFICIENCY IN ELECTROCHEMICAL SEPARATION SYSTEMS AND METHODS
    Publication number: 20150368125
    Abstract: An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.
    Type: Application
    Filed: August 28, 2015
    Publication date: December 24, 2015
    Inventors: Li-Shiang Liang, Keng Hoo Yeo, Lawrence J. Salvo
  • Modular electrochemical systems and methods
    Patent number: 9187350
    Abstract: An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: November 17, 2015
    Assignee: Evoqua Water Technologies Pte. Ltd.
    Inventors: Li-Shiang Liang, Keng Hoo Yeo, Lawrence J. Salvo
  • Modular electrochemical systems and methods
    Patent number: 9187349
    Abstract: An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: November 17, 2015
    Assignee: Evoqua Water Technologies Pte. Ltd.
    Inventors: Li-Shiang Liang, Keng Hoo Yeo, Lawrence J. Salvo
  • Techniques for promoting current efficiency in electrochemical separation systems and methods
    Patent number: 9139455
    Abstract: An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: September 22, 2015
    Assignee: Evoqua Water Technologies Pte. Ltd.
    Inventors: Li-Shiang Liang, Keng Hoo Yeo, Lawrence J. Salvo
  • Electrochemical separation modules
    Patent number: 8741121
    Abstract: An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: June 3, 2014
    Assignee: Evoqua Water Technologies LLC
    Inventors: Li-Shiang Liang, Keng Hoo Yeo, Lawrence J. Salvo
  • Flow Distributors for Electrochemical Separation
    Publication number: 20120118731
    Abstract: An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 17, 2012
    Applicant: SIEMENS PTE. LTD.
    Inventors: Li-Shiang Liang, Keng Hoo Yeo, Zhee Min Jimmy Yong
  • MODULAR ELECTROCHEMICAL SYSTEMS AND METHODS
    Publication number: 20120118729
    Abstract: An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 17, 2012
    Applicant: SIEMENS PTE. LTD.
    Inventors: Li-Shiang Liang, Keng Hoo Yeo, Lawrence J. Salvo
  • ELECTROCHEMICAL SEPARATION MODULES
    Publication number: 20120118744
    Abstract: An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 17, 2012
    Applicant: SIEMENS PTE. LTD.
    Inventors: Li-Shiang Liang, Keng Hoo Yeo, Lawrence J. Salvo
  • Techniques for Promoting Current Efficiency in Electrochemical Separation Systems and Methods
    Publication number: 20120118742
    Abstract: An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 17, 2012
    Applicant: SIEMENS PTE. LTD.
    Inventors: Li-Shiang Liang, Keng Hoo Yeo, Lawrence J. Salvo
  • MODULAR ELECTROCHEMICAL SYSTEMS AND METHODS
    Publication number: 20120118730
    Abstract: An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 17, 2012
    Applicant: SIEMENS PTE. LTD.
    Inventors: Li-Shiang Liang, Keng Hoo Yeo, Lawrence J. Salvo
  • SYSTEMS AND TECHNIQUES FOR ELECTRODIALYSIS
    Publication number: 20110284376
    Abstract: Electrochemical separation devices are configured for lower energy consumption. Techniques for reducing shadow effect may involve providing distance between a spacer screen and an adjacent ion-selective membrane. A spacer having a screen that is thin relative to a surrounding frame may be used. Mild pressure may also be applied to a compartment to promote distance between a spacer screen and an adjacent ion-selective membrane.
    Type: Application
    Filed: May 18, 2011
    Publication date: November 24, 2011
    Applicant: SIEMENS INDUSTRY, INC.
    Inventors: Kee Hoe Ng, Rongqlang Fu, Li-Shiang Liang, Zhee Min Jimmy Yong, Keng Hoo Yeo