Patents by Inventor Lee Nuang SIM

Lee Nuang SIM 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).

  • Method and apparatus for assessing a state of fouling of a reverse osmosis system
    Patent number: 11192069
    Abstract: A method for assessing a state of fouling of a reverse osmosis system is provided. The method includes deriving a plurality of impedance values from a low frequency region of an electrical impedance spectrum of a reverse osmosis membrane comprised in the reverse osmosis system, and determining a state of fouling of the reverse osmosis system based on the plurality of derived impedance values. Use of the method for in-situ monitoring of fouling on a reverse osmosis membrane, and an apparatus for assessing a state of fouling of a reverse osmosis system are also provided.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: December 7, 2021
    Assignee: Nanyang Technological University
    Inventors: Hans Gerard Leonard Coster, Anthony Gordon Fane, Lee Nuang Sim, Jia Shin Ho, Jiun Hui Low
  • METHOD AND APPARATUS FOR ASSESSING A STATE OF FOULING OF A REVERSE OSMOSIS SYSTEM
    Publication number: 20180161730
    Abstract: A method for assessing a state of fouling of a reverse osmosis system is provided. The method comprises deriving a plurality of impedance values from a low frequency region of an electrical impedance spectrum of a reverse osmosis membrane comprised in the reverse osmosis system, and determining a state of fouling of the reverse osmosis system based on 10 the plurality of derived impedance values. Use of the method for in-situ monitoring of fouling on a reverse osmosis membrane, and an apparatus for assessing a state of fouling of a reverse osmosis system are also provided.
    Type: Application
    Filed: April 25, 2016
    Publication date: June 14, 2018
    Inventors: Hans Gerard Leonard COSTER, Anthony Gordon FANE, Lee Nuang SIM, Jia Shin HO, Jiun Hui LOW