Patents by Inventor Chun-Sing Lee

Chun-Sing Lee 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: 10085942
    Abstract: The present invention provides nanoparticles and a method of preparing the nanoparticles by using an ice template. Pharmaceutical formulations including such nanoparticles and their use are also described. The method allows for an environmentally friendly provision of advantageously small particles with higher production rate and improved reproducibility.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: October 2, 2018
    Assignee: City University of Hong Kong
    Inventors: Chun-Sing Lee, Xiaohong Zhang, Jinfeng Zhang, Fu-Lung Wong
  • Publication number: 20180114649
    Abstract: A corrosion-free electrolyte for use in plasmonic-enhanced dye-sensitized solar cells includes ions of a plasmon-supporting metal, in particular iodide anions of the plasmon-supporting metal especially, but not exclusively, gold(I) diiodide anions ([AuI2]?) and/or gold(III) tetraiodide anions ([AuI4]?). Methods for preparing the electrolyte are also disclosed, as are methods for reducing the corrosion of plasmonic structures in plasmonic-enhanced dye-sensitized solar cells and for improving the efficiency of dye-sensitized solar cells, in particular plasmonic-enhanced dye-sensitized solar cells, by disposing the electrolyte between the electrodes.
    Type: Application
    Filed: October 25, 2016
    Publication date: April 26, 2018
    Inventors: Siu Pang Ng, Chi-man Lawrence Wu, Yu-qiao Fu, Chun Sing Lee
  • Patent number: 9873105
    Abstract: A method for enhancing sorption performance of a sorbent material includes the step of increasing a surface area of the sorbent material for adsorption of a fluid at an interface between the fluid and the sorbent material by arranging one or more apertures to be disposed on the sorbent material, wherein each of the one or more apertures is further arranged to define an interior space for absorption of the fluid.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: January 23, 2018
    Assignee: CITY UNIVERSITY OF HONG KONG
    Inventors: Chun Sing Lee, Yong Bin Tang, Fu Lung Wong, Chiu Yee Chan
  • Publication number: 20170143633
    Abstract: The present invention provides nanoparticles and a method of preparing the nanoparticles by using an ice template. Pharmaceutical formulations including such nanoparticles and their use are also described. The method allows for an environmentally friendly provision of advantageously small particles with higher production rate and improved reproducibility.
    Type: Application
    Filed: November 19, 2015
    Publication date: May 25, 2017
    Inventors: Chun-Sing Lee, Xiaohong Zhang, Jinfeng Zhang, Fu-Lung Wong
  • Publication number: 20170077500
    Abstract: There is provided a compound for use as material in cathode of a battery. The compound has i) at least sodium or ii) sodium and lithium as a first ingredient, copper as a second ingredient, at least a first transition metal in a third ingredient (M) selected from a group including manganese, nickel, iron, copper, zinc, chromium, vanadium, titanium, molybdenum and tungsten, niobium; and oxygen as a fourth ingredient; and wherein the compound has a chemical formula of NayCuxM1-xO2, or LiaNabCuxMi-xO2.
    Type: Application
    Filed: September 14, 2015
    Publication date: March 16, 2017
    Applicant: City University of Hong Kong
    Inventors: Yau Wai Denis YU, Wenpei KANG, Chun Sing LEE
  • Publication number: 20160114311
    Abstract: A method for enhancing sorption performance of a sorbent material includes the step of increasing a surface area of the sorbent material for adsorption of a fluid at an interface between the fluid and the sorbent material by arranging one or more apertures to be disposed on the sorbent material, wherein each of the one or more apertures is further arranged to define an interior space for absorption of the fluid.
    Type: Application
    Filed: October 24, 2014
    Publication date: April 28, 2016
    Inventors: Chun Sing Lee, Yong Bin Tang, Fu Lung Wong, Chiu Yee Chan
  • Patent number: 9287057
    Abstract: The present invention is concerned with a plasmonic enhanced tandem dye sensitized solar cell system. The system has plasmonic nanostructures integrated to both a photoanode and a photocathode for enhancing respective electron and hole carrier transfer.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: March 15, 2016
    Assignee: CITY UNIVERSITY OF HONG KONG
    Inventors: Siu-pang Ng, Chi-man Lawrence Wu, Chun-sing Lee
  • Patent number: 9269908
    Abstract: The present invention provides a bipolar compound represented by formula (I) and the derivatives thereof as a host material having excellent bipolar transporting properties for organic light-emitting diodes (OLEDs). The present invention also relates to a device including at least a layer of the bipolar compound and/or the derivatives thereof as a host material and a method of making the same.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: February 23, 2016
    Assignee: NANO AND ADVANCED MATERIALS INSTITUTE LIMITED
    Inventors: Chun Sing Lee, Xiao Hong Zhang, Shuit Tong Lee, Caijun Zheng, Man Keung Fung
  • Patent number: 9019602
    Abstract: There is provided a screen scattering system. The system has a transparent substrate forming a substrate layer, and wide band gap materials made of 0D, 1D and 3D elements forming a scattering layer. The 0D, 1D and 3D elements are in the form of nanostructures aligned uniformly on said substrate layer.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: April 28, 2015
    Assignee: City University of Hong Kong
    Inventors: Wenjun Zhang, Zhenzhen Lu, Hao Wang, Chun-Sing Lee
  • Publication number: 20140360564
    Abstract: The present invention is concerned with a plasmonic enhanced tandem dye sensitized solar cell system. The system has plasmonic nanostructures integrated to both a photoanode and a photocathode for enhancing respective electron and hole carrier transfer.
    Type: Application
    Filed: June 5, 2013
    Publication date: December 11, 2014
    Inventors: Siu-pang NG, Chi-man Lawrence WU, Chun-sing LEE
  • Publication number: 20140355111
    Abstract: There is provided a screen scattering system. The system has a transparent substrate forming a substrate layer, and wide band gap materials made of 0D, 1D and 3D elements forming a scattering layer. The 0D, 1D and 3D elements are in the form of nanostructures aligned uniformly on said substrate layer.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 4, 2014
    Inventors: Wenjun ZHANG, Zhenzhen Lu, Hao Wang, Chun-Sing Lee
  • Publication number: 20130099207
    Abstract: The present invention provides a bipolar compound represented by formula (I) and the derivatives thereof as a host material having excellent bipolar transporting properties for organic light-emitting diodes (OLEDs). The present invention also relates to a device including at least a layer of the bipolar compound and/or the derivatives thereof as a host material and a method of making the same.
    Type: Application
    Filed: April 19, 2012
    Publication date: April 25, 2013
    Applicant: NANO AND ADVANCED MATERIALS INSTITUTE LIMITED
    Inventors: Chun Sing LEE, Xiao Hong ZHANG, Shuit Tong LEE, Caijun ZHENG, Man Keung FUNG
  • Patent number: 8119254
    Abstract: There are disclosed rare-earth metal containing electron-injecting electrodes which are particularly effective for use with organic LED devices used in electroluminescent structures and which may in particular be formed as transparent electrodes for use in transparent or surface emitting OLEDs.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: February 21, 2012
    Assignee: City University of Hong Kong
    Inventors: Shuit-Tong Lee, Chun-Sing Lee, Shiu-Lun Lai, Mei-Yee Chan
  • Patent number: 8101290
    Abstract: Disclosed herein are several organic compounds having electron-transporting and/or hole-blocking performance and their preparation method and use and the OLEDs comprising the organic compound. The organic compounds exhibit high ionization potential (IP), electron affinity (Ea), glass transition temperature (Tg) and high electron mobility, and are a kind of good electron-transporting material with good hole-blocking ability. The devices comprising these compounds as one of the emitting layer, electron-transporting layer (ETL) and hole-blocking layer (HBL) show improved efficiency and better color purity.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: January 24, 2012
    Assignee: Technical Institute of Physics and Chemistry of Chinese Academy of Sciences
    Inventors: PengFei Wang, Na Li, Weimin Liu, Shuit-Tong Lee, Chun-Sing Lee
  • Patent number: 8048541
    Abstract: An electroluminescence device has an anode, a cathode and an emitting layer located between the anode and the cathode. The emitting layer contains a compound selected from a group consisting of neutral red and its derivatives.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: November 1, 2011
    Assignee: City University of Hong Kong
    Inventors: Shuit-Tong Lee, Chun Sing Lee, Pengfei Wang, Zhiyuan Xie
  • Publication number: 20100148662
    Abstract: An electroluminescence device has an anode, a cathode and an emitting layer located between the anode and the cathode. The emitting layer contains a compound selected from a group consisting of neutral red and its derivatives.
    Type: Application
    Filed: December 17, 2008
    Publication date: June 17, 2010
    Applicant: CITY UNIVERSITY OF HONG KONG
    Inventors: Shuit-Tong Lee, Chun Sing Lee, Pengfei Wang, Zhiyuan Xie
  • Publication number: 20090102356
    Abstract: Disclosed herein are several organic compounds having electron-transporting and/or hole-blocking performance and their preparation method and use and the OLEDs comprising the organic compound. The organic compounds exhibit high ionization potential (IP), electron affinity (Ea), glass transition temperature (Tg) and high electron mobility, and are a kind of good electron-transporting material with good hole-blocking ability. The devices comprising these compounds as one of the emitting layer, electron-transporting layer (ETL) and hole-blocking layer (HBL) show improved efficiency and better color purity.
    Type: Application
    Filed: October 15, 2008
    Publication date: April 23, 2009
    Applicant: Technical Institute Of Physics And Chemistry Of Chinese Academy Of Sciences
    Inventors: PengFei WANG, Na LI, Weimin LIU, Shuit-Tong LEE, Chun-Sing Lee
  • Publication number: 20090021161
    Abstract: A simple and efficient method of increasing conductivity of the fluorocarbon film is disclosed. By illuminating the fluorocarbon film under ultraviolet light (UV-CFx), the film conductivity can be increased by five orders of magnitude. Devices using such a UV-treated, conductive fluorocarbon film as a buffer layer give much better performance in terms of lower operational voltage and enhanced operational stability. The improved smoothness and lowered hole injection barrier height with UV-CFx are responsible for the enhanced performance of electroluminescent devices.
    Type: Application
    Filed: September 30, 2008
    Publication date: January 22, 2009
    Applicant: City University of Hong Kong
    Inventors: Chun Sing LEE, Shuit-Tong LEE, Shi Wun TONG, Yeshayahu LIFSHITZ
  • Patent number: 7429662
    Abstract: This invention relates to an organic electroluminescence (EL) device and to the use of a tris-cyclometalated iridium complex with a 3-Phenyl-azine ligand for thin-film type organic electroluminescence devices.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: September 30, 2008
    Assignee: City University of Hong Kong
    Inventors: Shuit Tong Lee, Chun Sing Lee, Baoxiu Mi, Peng-Fei Wang
  • Patent number: 7232617
    Abstract: A compound of formula [I]: X—R[I] wherein X represents the group: and R is either (i) represented by the formula [II] wherein n is 1 or 2, and the or each R7 group is independently selected from the group consisting of hydrogen and halogen atoms, cyano, nitro, mercapto, carbonyl and sulfone groups, and optionally substituted alkyl, haloalkyl, hydroxyalkyl, aryl, alkoxy, aryloxy, alkylamino, arylamino, alkylthio, arylthio, ester, siloxy, cyclic hydrocarbon and heterocyclic groups; or (ii) is selected from the group consisting of optionally substituted alkyl, hydroxyalkyl, aryl, cyclic hydrocarbon and heterocyclic groups; wherein in each case R1–R6 are each independently selected from the group consisting of hydrogen and halogen atoms, cyano, nitro, mercapto, carbonyl and sulfone groups, and optionally substituted alkyl, haloalkyl, hydroxyalkyl, aryl, alkoxy, aryloxy, alkylamino, arylamino, alkylthio, arylthio, ester, siloxy, cyclic hydrocarbon and heterocyclic groups.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: June 19, 2007
    Assignee: Cityu Research Limited
    Inventors: Shuit-Tong Lee, Chun-Sing Lee, Peng-Fei Wang, Bao-Xiu Mi