Patents by Inventor Siu Chung Chim

Siu Chung Chim 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: 20110143342
    Abstract: This application describes the discovery that, in a pregnant woman, certain genes (such as RASSF1A, APC, CASP8, RARB, SCGB3A1, DAB2IP, PTPN6, THY1, TMEFF2, and PYCARD) originated from a fetus are highly methylated, whereas the same genes of maternal origin are unmethylated. This discovery allows the easy detection of one or more of these methylated fetal genes in a biological sample from a pregnant woman, serving as a universal indicator of the presence of fetal DNA in the sample. These fetal methylation markers are particularly useful as positive controls for a non-invasive analytical process during which the quality and quantity of fetal DNA are monitored. These newly identified fetal markers can also be measured directly for diagnosis of certain pregnancy-related conditions.
    Type: Application
    Filed: June 1, 2010
    Publication date: June 16, 2011
    Applicant: The Chinese University of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Rossa Wai Kwun Chiu, Stephen Siu Chung Chim, Chunming Ding, Kwan Chee Chan, Hing Nam Ivy Wong, Ka Chun Ryan Yuen
  • Patent number: 7901884
    Abstract: This application provides the use of novel fetal markers for prenatal diagnosis and monitoring of certain pregnancy-related conditions. More specifically, the invention resides in the discovery that certain CpG islands located on fetal chromosome 21 demonstrate a methylation profile that is distinct from that of the corresponding CpG islands located on maternal chromosome 21. This application also provides kits for diagnosing or monitoring of the relevant conditions.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: March 8, 2011
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Rossa Wai Kwun Chiu, Stephen Siu Chung Chim, Chunming Ding, Shengnan Jin, Tracy Yuen Han Lee, Fiona Miu Fun Lun
  • Publication number: 20100323352
    Abstract: The present invention relates to new methods for diagnosing a pregnancy-associated disorder by analyzing fetal DNA present in the mother's blood. More specifically, this invention relies on the discovery that the maspin gene is differentially methylated in fetal DNA and in maternal DNA and provides these new diagnostic methods, which distinguish fetal DNA from maternal DNA and detect prenatal disorders based on abnormalities in fetal DNA level and methylation status.
    Type: Application
    Filed: March 15, 2010
    Publication date: December 23, 2010
    Applicant: THE CHINESE UNIVERSITY OF HONG KONG
    Inventors: YUK MING DENNIS LO, ROSSA WAI KWUN CHIU, STEPHEN SIU CHUNG CHIM, YU-KWAN TONG, CHUNMING DING
  • Publication number: 20100267034
    Abstract: Methods and kits are provided for diagnosing, monitoring, or predicting preeclaimpsia in a pregnant woman, trisomy 18 and trisomy 21 in a fetus, as well as for detecting pregnancy in a woman, by quantitatively measuring in the maternal blood the amount of one or more RNA species derived from a set of genetic loci and comparing the amount of the RNA species with a standard control.
    Type: Application
    Filed: April 5, 2010
    Publication date: October 21, 2010
    Applicant: The Chinese University of Hong Kong
    Inventors: Yuk-Ming Dennis LO, Rossa Wai Kwun CHIU, Stephen Siu Chung CHIM, Nancy Bo Yin TSUI
  • Patent number: 7754428
    Abstract: This application describes the discovery that, in a pregnant woman, certain genes (such as RASSF1A, APC, CASP8, RARB, SCGB3A1, DAB2IP, PTPN6, THY1, TMEFF2, and PYCARD) originated from a fetus are highly methylated, whereas the same genes of maternal origin are unmethylated. This discovery allows the easy detection of one or more of these methylated fetal genes in a biological sample from a pregnant woman, serving as a universal indicator of the presence of fetal DNA in the sample. These fetal methylation markers are particularly useful as positive controls for a non-invasive analytical process during which the quality and quantity of fetal DNA are monitored. These newly identified fetal markers can also be measured directly for diagnosis of certain pregnancy-related conditions.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: July 13, 2010
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Rossa Wai Kwun Chiu, Stephen Siu Chung Chim, Chunming Ding, Kwan Chee Chan, Hing Nam Ivy Wong, Ka Chun Ryan Yuen
  • Patent number: 7718367
    Abstract: Methods and kits are provided for diagnosing, monitoring, or predicting preeclaimpsia in a pregnant woman, trisomy 18 and trisomy 21 in a fetus, as well as for detecting pregnancy in a woman, by quantitatively measuring in the maternal blood the amount of one or more RNA species derived from a set of genetic loci and comparing the amount of the RNA species with a standard control.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: May 18, 2010
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk-Ming Dennis Lo, Rossa Wai Kwun Chiu, Stephen Siu Chung Chim, Nancy Bo Yin Tsui
  • Patent number: 7709194
    Abstract: The present invention relates to new methods for diagnosing a pregnancy-associated disorder by analyzing fetal DNA present in the mother's blood. More specifically, this invention relies on the discovery that the maspin gene is differentially methylated in fetal DNA and in maternal DNA and provides these new diagnostic methods, which distinguish fetal DNA from maternal DNA and detect prenatal disorders based on abnormalities in fetal DNA level and methylation status.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: May 4, 2010
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Rossa Wai Kwun Chiu, Stephen Siu Chung Chim, Yu-kwan Tong, Chunming Ding
  • Publication number: 20090155776
    Abstract: This application describes the discovery that, in a pregnant woman, certain genes (such as RASSF1A, APC, CASP8, RARB, SCGB3A1, DAB2IP, PTPN6, THY1, TMEFF2, and PYCARD) originated from a fetus are highly methylated, whereas the same genes of maternal origin are unmethylated. This discovery allows the easy detection of one or more of these methylated fetal genes in a biological sample from a pregnant woman, serving as a universal indicator of the presence of fetal DNA in the sample. These fetal methylation markers are particularly useful as positive controls for a non-invasive analytical process during which the quality and quantity of fetal DNA are monitored. These newly identified fetal markers can also be measured directly for diagnosis of certain pregnancy-related conditions.
    Type: Application
    Filed: April 6, 2007
    Publication date: June 18, 2009
    Applicant: The Chinese University of Hong Kong
    Inventors: Yuk Ming Dennis Lo, Rossa Wai Kwun Chiu, Stephen Siu Chung Chim, Chunming Ding, Kwan Chee Chan, Hing Nam Ivy Wong, Ka Chun Ryan Yuen
  • Publication number: 20050112558
    Abstract: Disclosed are nucleic acid primers, probes and standard target sequences that allow for the quantitative assessment of the SARS-CoV viral titer found in a biological specimen from a patient. Quantifying the viral titer in the patient sample allows the practitioner to make a prognostic determination of the severity of the SARS-CoV infection and the necessary treatment regime.
    Type: Application
    Filed: September 23, 2004
    Publication date: May 26, 2005
    Applicant: The Chinese University of Hong Kong
    Inventors: Yuk Ming Lo, Kai Ng, Kwan Chee Chan, Wai Kwun Chiu, Siu Lun Tam, Chi Wan Hung, Siu Chung Chim, Yu Tong
  • Publication number: 20050095618
    Abstract: The present invention relates to the fields of immunochemistry and pharmacology. Methods and compositions are described for the diagnosis and treatment of SARS CoV infection. More specifically, the application discloses nucleic acids and peptides of the spike glycoprotein of SARS CoV that provide prognostic and therapeutic compositions in treatment of individuals contracting, or in danger of contracting SARS CoV. The peptides of the invention are also useful in producing antibodies against the SARS CoV glycoprotein.
    Type: Application
    Filed: July 28, 2004
    Publication date: May 5, 2005
    Applicant: The Chinese University of Hong Kong
    Inventors: Kwok Tsui, Kwok Fung, Mary Miu Waye, Yuk Ming Lo, Siu Chung Chim, Wai Kwun Chiu, Siu Lun Tam, Kay Sheung Chan