Patents by Inventor Hang Chan

Hang Chan 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).

  • Publication number: 20130317567
    Abstract: A treatment system includes a regulator implanted within a patient, a computing device storing at least one patient database associated with the patient in whom the regulator is implanted, and a data transfer device. The data transfer device provides bi-directional communication (e.g., voice communication) and a data exchange (e.g., a treatment history, a patient database, and operational instructions) between the regulator and the computing device. A programmer can obtain patient reports and/or default treatment values from the computing device based on the data exchange.
    Type: Application
    Filed: July 30, 2013
    Publication date: November 28, 2013
    Applicant: EnteroMedics Inc.
    Inventors: Vineel Vallapureddy, Adrianus P. Donders, Satish Ramadhyani, Wu Wang, Hang Chan
  • Patent number: 8563607
    Abstract: The present invention relates to synthetic green tea derived polyphenolic compounds, their modes of syntheses, and their use in inhibiting proteasomal activity and in treating cancers. The present invention is also directed to pharmaceutical compositions useful in methods of inhibiting proteasomes and of treating cancers.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: October 22, 2013
    Assignees: University of South Florida, McGill University, The Hong Kong Polytechnic University
    Inventors: Q. Ping Dou, Tak-Hang Chan, David M. Smith
  • Patent number: 8521299
    Abstract: A treatment system includes a regulator implanted within a patient, a computing device storing at least one patient database associated with the patient in whom the regulator is implanted, and a data transfer device. The data transfer device provides bi-directional communication (e.g., voice communication) and a data exchange (e.g., a treatment history, a patient database, and operational instructions) between the regulator and the computing device. A programmer can obtain patient reports and/or default treatment values from the computing device based on the data exchange.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: August 27, 2013
    Assignee: EnteroMedics Inc.
    Inventors: Vineel Vallapureddy, Adrianus P. Donders, Satish Ramadhyani, Wu Wang, Hang Chan
  • Patent number: 8427355
    Abstract: An analog-to-digital converter (ADC) circuit comprising two time-interleaved successive approximation register (SAR) ADCs. Each of the two time-interleaved SAR ADCs comprises a first stage SAR sub-ADC, a residue amplifier, a second stage SAR sub-ADC and a digital error correction logic. The residue amplifier is shared between the time-interleaved paths, has a reduced gain and operates in sub-threshold to achieve power effective design.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: April 23, 2013
    Assignee: University of Macau
    Inventors: Sai-Weng Sin, Li Ding, Yan Zhu, He-Gong Wei, Chi-Hang Chan, U-Fat Chio, Seng-Pan U, Rui Paulo da Silva Martins, Franco Maloberti
  • Publication number: 20130045935
    Abstract: This invention relates to bis-flavonoid compounds of formula Flavonoid-Linker-Y-Linker-Flavonoid, their synthesis and use for inhibiting multidrug resistance in chemotherapy and protozoan infection.
    Type: Application
    Filed: May 3, 2011
    Publication date: February 21, 2013
    Inventors: Tak-Hang Chan, Larry Ming-Cheung Chow, Kin-Fai Chan, Iris Lai King Wong
  • Patent number: 8344931
    Abstract: The present invention provides an n-bits successive approximation register (SAR) analog-to-digital converting (ADC) circuit, comprising: an n-bits SAR control logic, a p-type capacitor network including a DACp array and a sampling capacitor CSp, an n-type capacitor network including a DACn array and a sampling capacitor CSn; and a comparator for comparing outputs from the p-type capacitor network and the n-type capacitor network, wherein a power supply and ground are directly connected to the p-type capacitor network and the n-type capacitor network without using reference voltages produced by a reference voltage generator. The n-bits SAR control logic comprises n shift registers, n bit registers, and a switching logic. The comparator comprises a first pre-amplifier, a second pre-amplifier and a dynamic latch. Alternative, the comparator comprises a four-input pre-amplifier and a dynamic latch.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: January 1, 2013
    Assignee: University of Macau
    Inventors: Yan Zhu, Chi-Hang Chan, U-Fat Chio, Sai-Weng Sin, Seng-Pan U, Rui Paulo Da Silva Martins, Franco Maloberti
  • Publication number: 20120306679
    Abstract: The present invention provides an n-bits successive approximation register (SAR) analog-to-digital converting (ADC) circuit, comprising: an n-bits SAR control logic, a p-type capacitor network including a DACp array and a sampling capacitor CSp, an n-type capacitor network including a DACn array and a sampling capacitor CSn; and a comparator for comparing outputs from the p-type capacitor network and the n-type capacitor network, wherein a power supply and ground are directly connected to the p-type capacitor network and the n-type capacitor network without using reference voltages produced by a reference voltage generator. The n-bits SAR control logic comprises n shift registers, n bit registers, and a switching logic. The comparator comprises a first pre-amplifier, a second pre-amplifier and a dynamic latch. Alternative, the comparator comprises a four-input pre-amplifier and a dynamic latch.
    Type: Application
    Filed: June 1, 2011
    Publication date: December 6, 2012
    Applicant: University of Macau
    Inventors: Yan ZHU, Chi-Hang CHAN, U-Fat CHIO, Sai-Weng SIN, Seng-Pan U, Rui Paulo Da Silva MARTINS, Franco MALOBERTI
  • Publication number: 20120229313
    Abstract: The present invention provides an analog-to-digital converter (ADC) circuit comprising two time-interleaved successive approximation register (SAR) ADCs. Each of the two time-interleaved SAR ADCs comprises a first stage SAR sub-ADC, a residue amplifier, a second stage SAR sub-ADC and a digital error correction logic.
    Type: Application
    Filed: September 14, 2011
    Publication date: September 13, 2012
    Applicant: University of Macau
    Inventors: Sai-Weng SIN, He-Gong WEI, Franco MALOBERTI, Li DING, Yan ZHU, Chi-Hang CHAN, U-Fat CHIO, Seng-Pan U, Rui Paulo da Silva MARTINS
  • Publication number: 20120232135
    Abstract: A method of reducing tumor cell growth, the method including administering an effective amount of a compound having the formula:
    Type: Application
    Filed: March 9, 2012
    Publication date: September 13, 2012
    Applicants: The Hong Kong Polytechnic University, McGill University, University of South Florida, Wayne State University
    Inventors: Tak-Hang CHAN, Wai-Har Lam, Larry Ming-Cheung Chow, Qing Ping Dou, Deborah Joyce Kuhn, Aslamuzzaman Kazi, Sheng Biao Wan, Kristin R. Landis-Piwowar
  • Patent number: 8193377
    Abstract: (?)-EGCG, the most abundant catechin, was found to be chemopreventive and anticancer agent. However, (?)-EGCG has at least one limitation: it gives poor bioavailability. This invention provides compounds of generally formulae below, wherein R11, R12, R13, R21, R22, R2, R3, and R4 are each independently selected from the group consisting of —H, and C1 to C10 acyloxyl group; and R5 is selected from the group consisting of —H, C1-C10-alkyl, C2-C10-alkenyl, C2-C10-alkynyl, C3-C7-cycloalkyl, phenyl, benzyl and C3-C7-cycloalkenyl, whereas each of the last mentioned 7 groups can be substituted with any combination of one to six halogen atoms; at least one of R11, R12, R13, R21, R22, R2, R3 and R4 is —H, which were found to be more potent than their non-protected counterparts, which can be used as proteasome inhibitors to reduce tumor cell growth.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: June 5, 2012
    Assignees: The Hong Kong Polytechnic University, Wayne State University, University of South Florida
    Inventors: Tak-Hang Chan, Wai-Har Lam, Larry Ming-Cheung Chow, Qing Ping Dou, Deborah Joyce Kuhn, Aslamuzzaman Kazi, Sheng Biao Wan, Kristin R. Landis-Piwowar
  • Patent number: 8168801
    Abstract: The present disclosure relates to structurally defined imidazolium-type ionic oligomers of the formula: wherein n is an integer ranging from 1 to 20; A is N or m is an integer ranging from 1 to 5; X is selected from the group consisting of Br, OTf, CF3CO2, CH3CO2, BF4, PF6, NTf2, F, Cl and I; and R is selected from the group consisting of hydrogen and C1-10 alkyl. The imidazolium-type ionic oligomers lend themselves as soluble/solid supports for biopolymer synthesis.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: May 1, 2012
    Assignees: The Royal Institution for the Advancement of Learning/McGill University, The Hong Kong Polytechnic University
    Inventors: Tak-Hang Chan, Xun He
  • Publication number: 20120065706
    Abstract: A treatment system includes a regulator implanted within a patient, a computing device storing at least one patient database associated with the patient in whom the regulator is implanted, and a data transfer device. The data transfer device provides bi-directional communication (e.g., voice communication) and a data exchange (e.g., a treatment history, a patient database, and operational instructions) between the regulator and the computing device. A programmer can obtain patient reports and/or default treatment values from the computing device based on the data exchange.
    Type: Application
    Filed: November 9, 2011
    Publication date: March 15, 2012
    Applicant: EnteroMedics Inc.
    Inventors: Vineel Vallapureddy, Adrianus P. Donders, Satish Ramadhyani, Wu Wang, Hang Chan
  • Publication number: 20120029067
    Abstract: The present invention relates to synthetic green tea derived polyphenolic compounds, their modes of syntheses, and their use in inhibiting proteasomal activity and in treating cancers. The present invention is also directed to pharmaceutical compositions useful in methods of inhibiting proteasomes and of treating cancers.
    Type: Application
    Filed: October 11, 2011
    Publication date: February 2, 2012
    Applicants: UNIVERSITY OF SOUTH FLORIDA, THE HONG KONG POLYTECHNIC UNIVERSITY, MCGILL UNIVERSITY
    Inventors: Q. Ping DOU, Tak-Hang CHAN, David M. SMITH
  • Patent number: 8068918
    Abstract: A treatment system includes a regulator implanted within a patient, a computing device storing at least one patient database associated with the patient in whom the regulator is implanted, and a data transfer device. The data transfer device provides bidirectional communication (e.g., voice communication) and a data exchange (e.g., a treatment history, a patient database, and operational instructions) between the regulator and the computing device. A programmer can obtain patient reports and/or default treatment values from the computing device based on the data exchange.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: November 29, 2011
    Assignee: EnteroMedics Inc.
    Inventors: Vineel Vallapureddy, Adrianus P. Donders, Satish Ramadhyani, Wu Wang, Hang Chan
  • Patent number: 8058310
    Abstract: The present invention relates to synthetic green tea derived polyphenolic compounds, their modes of syntheses, and their use in inhibiting proteasomal activity and in treating cancers. The present invention is also directed to pharmaceutical compositions useful in methods of inhibiting proteasomes and of treating cancers.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: November 15, 2011
    Assignees: University of South Florida, McGill University, The Hong Kong Polytechnic University
    Inventors: Q. Ping Dou, Tak-Hang Chan, David M. Smith
  • Publication number: 20110263879
    Abstract: A zwitterionic phosphonium salt of Formula I: wherein n is 0 or 1; R is H or SO3; R? is selected from the group consisting of C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 cycloalkyl, phenyl, substituted phenyl, benzyl and C1-C10 alkoxy-carbonyl; R? is CX3 when n is O; and X is selected from the group consisting of F, Cl, Br and I. The zwitterionic phosphonium salts are useful reagents for the preparation of alkenes and acetals from the corresponding aldehyde.
    Type: Application
    Filed: July 29, 2009
    Publication date: October 27, 2011
    Applicant: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Tak-Hang Chan, Congde Huo, Xun He
  • Patent number: 8026278
    Abstract: The present invention relates to compounds for the inhibition of pyruvate kinase and ATP production which are capable of inhibiting cancer cells proliferation.
    Type: Grant
    Filed: May 29, 2006
    Date of Patent: September 27, 2011
    Inventors: Brian R. Smith, Tak-Hang Chan, Brian Leyland-Jones
  • Patent number: D680210
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: April 16, 2013
    Assignee: Win Global Electrical Appliance Limited
    Inventor: Wing Hang Chan
  • Patent number: D689183
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: September 3, 2013
    Assignee: Win Global Electrical Appliance Limited
    Inventor: Wing Hang Chan
  • Patent number: D689956
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: September 17, 2013
    Assignee: Hobbyengine Model Ltd.
    Inventor: Chi Hang Chan