Patents by Inventor Yufeng CAI

Yufeng CAI 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: 11241655
    Abstract: A draw solute for a forward osmosis process, the draw solute comprising: a thermally responsive ionic compound having at least one of: a lower critical solution temperature (LCST) and an upper critical solution temperature (UCST), the draw solute being regeneratable from a diluted aqueous draw solution after forward osmosis via one of: liquid-liquid phase separation and solid-liquid phase separation, the draw solute being regeneratable when the diluted aqueous draw solution is at a temperature selected from one of: above the LCST and below the UCST.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: February 8, 2022
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Xiao Hu, Yufeng Cai, Rong Wang
  • Publication number: 20210366122
    Abstract: Provided are a method and an apparatus for segmenting a G-banded adhered chromosome based on a geometrical characteristic and regional fusion, and a chromosome karyotype analysis device. The method first extracts concave points of an outline of an adhered chromosome region, then cuts an adhered chromosome image via a cutting line formed by the concave points in pairs, and at last carries out a fusion operation on a local cut region and selects a most appropriate region as a final single chromosome region. The method implements automatic segmentation of an adhered chromosome and improves the chromosome karyotype analysis efficiency.
    Type: Application
    Filed: October 22, 2018
    Publication date: November 25, 2021
    Inventors: Shengri FENG, Ge LIN, Yi LI, Guangxiu LU, Yang MU, Yueqiu TAN, Yufeng CAI, Zixing CAI
  • Patent number: 11036068
    Abstract: The present disclosure is related to a non-volatile thermotropic composite material comprising a first component comprising a non-aqueous and non-volatile proton donating material; a second component comprising a monomer, an oligomer or a polymer as a proton accepting material; a non-volatile polymeric matrix; and wherein the non-volatile polymeric matric, the first component and the second component are configured to maintain at least one property which is reversibly changeable based on thermal energy received by or given out from the non-volatile thermotropic composite material. Proton donating materials include ionic liquid, poly(ionic liquid) and deep eutectic salt. The proton accepting material comprises at least an ether, a phenyl ester, an amide and an acrylate functional group.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: June 15, 2021
    Assignee: Nanyang Technological University
    Inventors: Xiao Hu, Heng Yeong Lee, Yufeng Cai
  • Patent number: 11007482
    Abstract: A draw solute for forward osmosis comprising a semi-interpenetrating (semi-IPN) hydrogel which comprises a thermally responsive polymer and a hydrophilic polymer, such that the semi-IPN hydrogel is capable of switching between a hydrophilic and hydrophobic state in response to changes in temperature is provided. Also provided is a draw solute comprising a hydrogel of a polyionic thermally responsive polymer, wherein the hydrogel switches between a hydrophilic state to allow absorption of water osmosed from a feed solution and a hydrophobic state to allow release of the absorbed water in response to changes in temperature. There is also provided a forward osmosis method comprising: contacting a feed solution and the draw solute via a semi-permeable membrane, such that feed water in the feed solution passes through the membrane by osmotic pressure and moves into the draw solute; and separating the water from the draw solute to form a purified water product.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: May 18, 2021
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Xiao Hu, Yufeng Cai, Rong Wang
  • Patent number: 10690122
    Abstract: The present invention discloses and claims a more efficient and economical method and system for osmotic energy production and capture using responsive compounds and molecules. The present invention is an energy harvest system enabled by stimuli responsive draw solutions that are competent in terms of energy production, geographic location flexibility, and the affordable, efficient and economical production and delivery of osmotic power. Specifically, the present invention is a novel osmotic power system that uses stimuli responsive draw solutions, economically feasible larger permeable membranes, and low grade heat sources to deliver osmotic power more efficiently and economically with less negative environmental impact, greater power output, and located in more geographically diverse areas of the world than previously thought possible for supporting such a power source.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: June 23, 2020
    Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Xiao Hu, Yufeng Cai, Zhiping Lai, Yujiang Zhong
  • Patent number: 10549237
    Abstract: Disclosed herein is a use of an inorganic salt to form and regenerate a draw solute for forward osmosis, wherein the inorganic salt is selected from one or more of the group selected from sodium sulfate, calcium lactate, disodium phosphate, tetrasodium pyrophosphate, and hydrates thereof. Also disclosed herein is a method of forward osmosis using said inorganic salt.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: February 4, 2020
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Xiao Hu, Yufeng Cai
  • Patent number: 10532319
    Abstract: The present invention provides a draw solute for forward osmosis comprising a carbon dioxide responsive structural unit and a thermally responsive structural unit, wherein the draw solute is capable of reversibly switching between a protonated state and a deprotonated state. The present invention also provides a forward osmosis method utilising the draw solute.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: January 14, 2020
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Xiao Hu, Yufeng Cai, Rong Wang
  • Publication number: 20190258093
    Abstract: The present disclosure is related to a non-volatile thermotropic composite material comprising a first component comprising a non-aqueous and non-volatile proton donating material; a second component comprising a monomer, an oligomer or a polymer as a proton accepting material; a non-volatile polymeric matrix; and wherein the non-volatile polymeric matric, the first component and the second component are configured to maintain at least one property which is reversibly changeable based on thermal energy received by or given out from the non-volatile thermotropic composite material. Proton donating materials include ionic liquid, poly(ionic liquid) and deep eutectic salt. The proton accepting material comprises at least an ether, a phenyl ester, an amide and an acrylate functional group.
    Type: Application
    Filed: November 2, 2017
    Publication date: August 22, 2019
    Inventors: Xiao HU, Heng Yeong LEE, Yufeng CAI
  • Publication number: 20190003465
    Abstract: The present invention discloses and claims a more efficient and economical method and system for osmotic energy production and capture using responsive compounds and molecules. The present invention is an energy harvest system enabled by stimuli responsive draw solutions that are competent in terms of energy production, geographic location flexibility, and the affordable, efficient and economical production and delivery of osmotic power. Specifically, the present invention is a novel osmotic power system that uses stimuli responsive draw solutions, economically feasible larger permeable membranes, and low grade heat sources to deliver osmotic power more efficiently and economically with less negative environmental impact, greater power output, and located in more geographically diverse areas of the world than previously thought possible for supporting such a power source.
    Type: Application
    Filed: January 19, 2017
    Publication date: January 3, 2019
    Applicants: King Abdullah University of Science and Technology, Nanyang Technological University
    Inventors: Xiao Hu, Yufeng Cai, Zhiping Lai, Yujiang Zhong
  • Publication number: 20180015414
    Abstract: Disclosed herein is a use of an inorganic salt to form and regenerate a draw solute for forward osmosis, wherein the inorganic salt is selected from one or more of the group selected from sodium sulfate, calcium lactate, disodium phosphate, tetrasodium pyrophosphate, and hydrates thereof. Also disclosed herein is a method of forward osmosis using said inorganic salt.
    Type: Application
    Filed: February 17, 2016
    Publication date: January 18, 2018
    Applicant: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Xiao HU, Yufeng CAI
  • Publication number: 20180008933
    Abstract: A draw solute for a forward osmosis process, the draw solute comprising: a thermally responsive ionic compound having at least one of: a lower critical solution temperature (LCST) and an upper critical solution temperature (UCST), the draw solute being regeneratable from a diluted aqueous draw solution after forward osmosis via one of: liquid-liquid phase separation and solid-liquid phase separation, the draw solute being regeneratable when the diluted aqueous draw solution is at a temperature selected from one of: above the LCST and below the UCST
    Type: Application
    Filed: March 25, 2015
    Publication date: January 11, 2018
    Inventors: Xiao HU, Yufeng CAI, Rong WANG
  • Publication number: 20160082391
    Abstract: A draw solute for forward osmosis comprising a semi-interpenetrating (semi-IPN) hydrogel which comprises a thermally responsive polymer and a hydrophilic polymer, such that the semi-IPN hydrogel is capable of switching between a hydrophilic and hydrophobic state in response to changes in temperature is provided. Also provided is a draw solute comprising a hydrogel of a polyionic thermally responsive polymer, wherein the hydrogel switches between a hydrophilic state to allow absorption of water osmosed from a feed solution and a hydrophobic state to allow release of the absorbed water in response to changes in temperature. There is also provided a forward osmosis method comprising: contacting a feed solution and the draw solute via a semi-permeable membrane, such that feed water in the feed solution passes through the membrane by osmotic pressure and moves into the draw solute; and separating the water from the draw solute to form a purified water product.
    Type: Application
    Filed: April 28, 2014
    Publication date: March 24, 2016
    Applicant: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Xiao HU, Yufeng CAI, Rong WANG
  • Publication number: 20160074810
    Abstract: The present invention provides a draw solute for forward osmosis comprising a carbon dioxide responsive structural unit and a thermally responsive structural unit, wherein the draw solute is capable of reversibly switching between a protonated state and a deprotonated state. The present invention also provides a forward osmosis method utilising the draw solute.
    Type: Application
    Filed: April 28, 2014
    Publication date: March 17, 2016
    Applicant: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Xiao HU, Yufeng CAI, Rong WANG