Patents by Inventor Hang Cheng

Hang Cheng 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: 20220227775
    Abstract: A 1H-pyrazolo[4,3-H]quinazoline compound represented by formula (I) can be used for treating cell proliferation dysfunction, and is an broad-spectrum and strongly-active inhibitor for a cell cyclin-dependent kinase (CDK).
    Type: Application
    Filed: April 1, 2022
    Publication date: July 21, 2022
    Inventors: Bin Liu, Hang Cheng, Weiyan Xiong, Chenggang Zhang, Chengzhi Yu
  • Publication number: 20220205038
    Abstract: Embodiments may include a method of sequencing cell-free DNA fragments. Cell-free DNA fragments may include plasma DNA fragments. The method may include receiving a biological sample including a plurality of DNA fragments. The biological sample may have a first concentration of DNA fragments. The method may also include concentrating the biological sample to have a second concentration of DNA fragments. The second concentration of DNA fragments may be 5 or more times higher than the first concentration of DNA fragments. The method may further include passing the plurality of DNA fragments through nanopores on a substrate. For each of the plurality of DNA fragments, electrical signals may be detected as the DNA fragment passes through a nanopore. The electrical signals may correspond to the sequence of the DNA fragment. Systems for analyzing DNA fragments are also described.
    Type: Application
    Filed: March 18, 2022
    Publication date: June 30, 2022
    Inventors: Yuk-Ming Dennis Lo, Rossa Wai Kwun Chiu, Suk Hang Cheng
  • Patent number: 11371084
    Abstract: Methods and systems described herein involve using long cell-free DNA fragments to analyze a biological sample from a pregnant subject. The status of methylated CpG sites and single nucleotide polymorphisms (SNPs) is often used to analyze DNA fragments of a biological sample. A CpG site and a SNP are typically separated from the nearest CpG site or SNP by hundreds or thousands of base pairs. Finding two or more consecutive CpG sites or SNPs on most cell-free DNA fragments is improbable or impossible. Cell-free DNA fragments longer than 600 bp may include multiple CpG sites and/or SNPs. The presence of multiple CpG sites and/or SNPs on long cell-free DNA fragments may allow for analysis than with short cell-free DNA fragments alone. The long cell-free DNA fragments can be used to identify a tissue of origin and/or to provide information on a fetus in a pregnant female.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: June 28, 2022
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk-Ming Dennis Lo, Rossa Wai Kwun Chiu, Kwan Chee Chan, Peiyong Jiang, Suk Hang Cheng, Cheuk Yin Yu, Yee Ting Cheung, Wenlei Peng
  • Patent number: 11363862
    Abstract: An illumination system for a handheld support apparatus is disclosed. A variety of applications for the handheld support apparatus are considered, including, but not limited to, hiking, downhill skiing, cross-country skiing, trailblazing, rock climbing, and mountaineering. The illumination system can advantageously illuminate the surrounding environment of the handheld support apparatus during use. Illumination systems can be disposed within the support apparatus or on the external surface of the support apparatus. The illumination system can comprise a power source and a light-emitting device. The illumination system can further comprise at least one internal electrical conductor configured to transfer power from the power source to the light-emitting device. In some embodiments, the light-emitting from the support apparatus can be controlled by predetermined values to optimize preferred performance parameters.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: June 21, 2022
    Assignee: Belgravia Wood Limited
    Inventors: Elmer Chi Hang Cheng, Victor Hugo Ocegueda Gallaga
  • Publication number: 20220177971
    Abstract: The ends of cell-free DNA fragments may be used for analysis of a biological sample. In some embodiments, DNA from a urine sample may be analyzed. Cell-free DNA fragments often include jagged ends, where one end of one strand of double-stranded DNA extends beyond the other end of the other strand. The length and amount of these jagged ends may be used to determine a level of a condition of an individual. The density of ends of fragments in certain regions may also be used in classifying the level of a condition. Additionally, DNA fragments may show a periodic pattern with the amount of DNA fragments corresponding to a length of the overhang. The periodicity may be analyzed to determine properties of a biological sample. Jagged ends may also be analyzed with a technique that avoids trimming overhanging 3? ends of a double-stranded DNA.
    Type: Application
    Filed: December 7, 2021
    Publication date: June 9, 2022
    Inventors: Yuk-Ming Dennis Lo, Kwan Chee Chan, Peiyong Jiang, Suk Hang Cheng, Ze Zhou, Tingting Xie, Guangya Wang, Chen Ding
  • Publication number: 20220163177
    Abstract: A flame simulation method including: identifying, by a computing device, a maximum brightness level value and a primary event generation level; setting, in response to determining that a first event occurred based on the primary event generation level, a secondary event generation level; adjusting the secondary event generation level towards a baseline secondary event generation level; adjusting a current brightness value of a lighting element of a flame simulation apparatus towards the maximum brightness level value; setting, in response to determining that a second event occurred based on the secondary event generation level, the current brightness level value of the lighting element to a value less than the maximum brightness level; and controlling, by the computing device, a brightness level of the lighting element to correspond to the current brightness level value of the lighting element.
    Type: Application
    Filed: January 12, 2022
    Publication date: May 26, 2022
    Inventors: Victor Hugo Ocegueda Gallaga, An-Wu Tang, Lewis Ka Hang Cheng
  • Patent number: 11319323
    Abstract: A 1H-pyrazolo[4,3-H]quinazoline compound represented by formula (I) can be used for treating cell proliferation dysfunction, and is an broad-spectrum and strongly-active inhibitor for a cell cyclin-dependent kinase (CDK).
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: May 3, 2022
    Inventors: Bin Liu, Hang Cheng, Weiyan Xiong, Chenggang Zhang, Chengzhi Yu
  • Patent number: 11319586
    Abstract: Embodiments may include a method of determining a nucleic acid sequence. The method may include receiving a plurality of DNA fragments. The method may also include concatemerizing a first set of the DNA fragments to obtain a concatemer. The method may include performing single-molecule sequencing of the concatemer to obtain a first sequence of the concatemer. In some embodiments, single-molecule sequencing may be performed using a nanopore, and the method may include passing the concatemer through a nanopore. A first electrical signal may then be detected as the concatemer passes through the nanopore. The first electrical signal may correspond to a first sequence of the concatemer. In addition, the method may include analyzing the first electrical signal to determine the first sequence. Subsequences of the first sequence may be aligned to identify sequences corresponding to each of the first set of the DNA fragments.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: May 3, 2022
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk-Ming Dennis Lo, Rossa Wai Kwun Chiu, Suk Hang Cheng
  • Patent number: 11248762
    Abstract: A flame simulation method including: identifying, by a computing device, a maximum brightness level value and a primary event generation level; setting, in response to determining that a first event occurred based on the primary event generation level, a secondary event generation level; adjusting the secondary event generation level towards a baseline secondary event generation level; adjusting a current brightness value of a lighting element of a flame simulation apparatus towards the maximum brightness level value; setting, in response to determining that a second event occurred based on the secondary event generation level, the current brightness level value of the lighting element to a value less than the maximum brightness level; and controlling, by the computing device, a brightness level of the lighting element to correspond to the current brightness level value of the lighting element.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: February 15, 2022
    Inventors: Victor Hugo Ocegueda Gallaga, An-Wu Tang, Lewis Ka Hang Cheng
  • Publication number: 20210401131
    Abstract: An illumination system for a handheld support apparatus is disclosed. A variety of applications for the handheld support apparatus are considered, including, but not limited to, hiking, downhill skiing, cross-country skiing, trailblazing, rock climbing, and mountaineering. The illumination system can advantageously illuminate the surrounding environment of the handheld support apparatus during use. Illumination systems can be disposed within the support apparatus or on the external surface of the support apparatus. The illumination system can comprise a power source and a light-emitting device. The illumination system can further comprise at least one internal electrical conductor configured to transfer power from the power source to the light-emitting device. In some embodiments, the light-emitting from the support apparatus can be controlled by predetermined values to optimize preferred performance parameters.
    Type: Application
    Filed: January 21, 2020
    Publication date: December 30, 2021
    Inventors: Elmer Chi Hang Cheng, Victor Hugo Ocegueda Gallaga
  • Publication number: 20210363571
    Abstract: Systems and methods for using determination of base modification in analyzing nucleic acid molecules and acquiring data for analysis of nucleic acid molecules are described herein. Base modifications may include methylations. Methods to determine base modifications may include using features derived from sequencing. These features may include the pulse width of an optical signal from sequencing bases, the interpulse duration of bases, and the identity of the bases. Machine learning models can be trained to detect the base modifications using these features. The relative modification or methylation levels between haplotypes may indicate a disorder. Modification or methylation statuses may also be used to detect chimeric molecules.
    Type: Application
    Filed: July 19, 2021
    Publication date: November 25, 2021
    Inventors: Yuk-Ming Dennis Lo, Rossa Wai Kwun Chiu, Kwan Chee Chan, Peiyong Jiang, Suk Hang Cheng, Wenlei Peng, On Yee Tse
  • Publication number: 20210265007
    Abstract: Methods and systems described herein involve using long cell-free DNA fragments to analyze a biological sample from a pregnant subject. The status of methylated CpG sites and single nucleotide polymorphisms (SNPs) is often used to analyze DNA fragments of a biological sample. A CpG site and a SNP are typically separated from the nearest CpG site or SNP by hundreds or thousands of base pairs. Finding two or more consecutive CpG sites or SNPs on most cell-free DNA fragments is improbable or impossible. Cell-free DNA fragments longer than 600 bp may include multiple CpG sites and/or SNPs. The presence of multiple CpG sites and/or SNPs on long cell-free DNA fragments may allow for analysis than with short cell-free DNA fragments alone. The long cell-free DNA fragments can be used to identify a tissue of origin and/or to provide information on a fetus in a pregnant female.
    Type: Application
    Filed: February 5, 2021
    Publication date: August 26, 2021
    Inventors: Yuk-Ming Dennis Lo, Rossa Wai Kwun Chiu, Kwan Chee Chan, Peiyong Jiang, Suk Hang Cheng, Cheuk Yin Yu, Yee Ting Cheung, Wenlei Peng
  • Publication number: 20210254142
    Abstract: Methods and systems described herein involve using long cell-free DNA fragments to analyze a biological sample from a pregnant subject. The status of methylated CpG sites and single nucleotide polymorphisms (SNPs) is often used to analyze DNA fragments of a biological sample. A CpG site and a SNP are typically separated from the nearest CpG site or SNP by hundreds or thousands of base pairs. Finding two or more consecutive CpG sites or SNPs on most cell-free DNA fragments is improbable or impossible. Cell-free DNA fragments longer than 600 bp may include multiple CpG sites and/or SNPs. The presence of multiple CpG sites and/or SNPs on long cell-free DNA fragments may allow for analysis than with short cell-free DNA fragments alone. The long cell-free DNA fragments can be used to identify a tissue of origin and/or to provide information on a fetus in a pregnant female.
    Type: Application
    Filed: March 9, 2021
    Publication date: August 19, 2021
    Inventors: Yuk-Ming Dennis Lo, Rossa Wai Kwun Chiu, Kwan Chee Chan, Peiyong Jiang, Suk Hang Cheng, Cheuk Yin Yu, Yee Ting Cheung, Wenlei Peng
  • Patent number: 11091485
    Abstract: Provided is an imidazo[1?,2?:1,6]pyrido[2,3-d]pyrimidine compound of general formula (I). The compound can be used in treating a cell proliferative disorder and is a cyclin-dependent kinase (CDK) inhibitor with broad-spectrum and strong activity.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: August 17, 2021
    Assignee: SHENGKE PHARMACEUTICALS (JIANGSU) LTD.
    Inventors: Bin Liu, Hang Cheng, Weiyan Xiong, Chenggang Zhang, Chengzhi Yu
  • Patent number: 11091794
    Abstract: Systems and methods for using determination of base modification in analyzing nucleic acid molecules and acquiring data for analysis of nucleic acid molecules are described herein. Base modifications may include methylations. Methods to determine base modifications may include using features derived from sequencing. These features may include the pulse width of an optical signal from sequencing bases, the interpulse duration of bases, and the identity of the bases. Machine learning models can be trained to detect the base modifications using these features. The relative modification or methylation levels between haplotypes may indicate a disorder. Modification or methylation statuses may also be used to detect chimeric molecules.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: August 17, 2021
    Assignee: The Chinese University of Hong Kong
    Inventors: Yuk-Ming Dennis Lo, Rossa Wai Kwun Chiu, Kwan Chee Chan, Peiyong Jiang, Suk Hang Cheng, Wenlei Peng, On Yee Tse
  • Publication number: 20210147424
    Abstract: A 1H-pyrazolo[4,3-H]quinazoline compound represented by formula (I) can be used for treating cell proliferation dysfunction, and is an broad-spectrum and strongly-active inhibitor for a cell cyclin-dependent kinase (CDK).
    Type: Application
    Filed: August 10, 2018
    Publication date: May 20, 2021
    Inventors: Bin Liu, Hang Cheng, Weiyan Xiong, Chenggang Zhang, Chengzhi Yu
  • Publication number: 20210047679
    Abstract: Systems and methods for using determination of base modification in analyzing nucleic acid molecules and acquiring data for analysis of nucleic acid molecules are described herein. Base modifications may include methylations. Methods to determine base modifications may include using features derived from sequencing. These features may include the pulse width of an optical signal from sequencing bases, the interpulse duration of bases, and the identity of the bases. Machine learning models can be trained to detect the base modifications using these features. The relative modification or methylation levels between haplotypes may indicate a disorder. Modification or methylation statuses may also be used to detect chimeric molecules.
    Type: Application
    Filed: August 17, 2020
    Publication date: February 18, 2021
    Inventors: Yuk-Ming Dennis Lo, Rossa Wai Kwun Chiu, Kwan Chee Chan, Peiyong Jiang, Suk Hang Cheng, Wenlei Peng, On Yee Tse
  • Publication number: 20200332976
    Abstract: A flame simulation method including: identifying, by a computing device, a maximum brightness level value and a primary event generation level; setting, in response to determining that a first event occurred based on the primary event generation level, a secondary event generation level; adjusting the secondary event generation level towards a baseline secondary event generation level; adjusting a current brightness value of a lighting element of a flame simulation apparatus towards the maximum brightness level value; setting, in response to determining that a second event occurred based on the secondary event generation level, the current brightness level value of the lighting element to a value less than the maximum brightness level; and controlling, by the computing device, a brightness level of the lighting element to correspond to the current brightness level value of the lighting element.
    Type: Application
    Filed: July 2, 2020
    Publication date: October 22, 2020
    Inventors: Victor Hugo Ocegueda Gallaga, An-Wu Tang, Lewis Ka Hang Cheng
  • Patent number: 10769696
    Abstract: A system that evaluates Boolean expressions receives a first set of Boolean expressions that include one or more Boolean expressions, and receives a second set of Boolean expressions that includes one or more Boolean expressions. The system determines one or more overlapping Boolean expressions between the first set and the second set. Each Boolean expression has a corresponding identifier and priority, and two or more Boolean expressions overlap when the Boolean expressions have an identical identifier. Each set of Boolean expressions includes a corresponding index.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: September 8, 2020
    Assignee: Oracle International Corporation
    Inventors: Ashish Surana, Charles Trowbridge, Ivan Yee-Hang Cheng, Sumesh Poduval, Thomas P. Scott
  • Publication number: 20200270251
    Abstract: Provided is an imidazo[1?;2?:1,6]pyrido[2,3-d]pyrimidine compound of general formula (I). The compound can be used in treating a cell proliferative disorder and is a cyclin-dependent kinase (CDK) inhibitor with broad-spectrum and strong activity.
    Type: Application
    Filed: May 21, 2018
    Publication date: August 27, 2020
    Inventors: Bin Liu, Hang Cheng, Weiyan Xiong, Chenggang Zhang, Chengzhi Yu