Patents by Inventor Zhihai MA

Zhihai MA 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: 11680290
    Abstract: The present disclosure relates to methods of enzymatic treatment of double-stranded PCR amplified products for eliminating or minimizing primer-dimers in multiplex PCR reactions and for the efficient ligation of adapters. The present disclosure relates to methods and compositions that allow more efficient highly multiplex target amplification compared to conventional methods, compositions and kits by minimizing laboratory steps, eliminating primer-dimers and increasing the efficiency of adapter ligation. The disclosed methods use multiple target-specific primers for specific and selective amplification of targets in a subject's genome. The disclosed methods can be used for numerous downstream procedures and analysis, including DNA sequencing.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: June 20, 2023
    Assignee: Chapter Diagnostics, Inc.
    Inventors: Chunlin Wang, Zhihai Ma, Baback Gharizadeh
  • Patent number: 11261479
    Abstract: The present disclosure relates to a method of target enrichment and amplification of selective target regions of genomes or nucleic acid samples and further analysis by systems such as NGS. The disclosure provides methods and kits that can be used in numerous downstream procedures including DNA sequencing. The disclosed methods can be utilized to sequence the target nucleic acid sequences such as to detect the presence of genetic variations for biological assays, assessment of disease, to count copies of target regions, and to allow such target enrichment prior to sequencing.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: March 1, 2022
    Assignee: Chapter Diagnostics, Inc.
    Inventors: Chunlin Wang, Zhihai Ma, Baback Gharizadeh
  • Patent number: 11149322
    Abstract: The present disclosure relates to compositions and methods for detection, identification and quantification of human papillomaviruses (HPV) and clinically significant sexually transmitted infections (STI) in a single amplification reaction. The disclosed method utilizes next-generation sequencing (NGS) to sequence amplified products. The present disclosure is also directed to kits containing primers specific to multiple HPV and STI targets.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: October 19, 2021
    Assignee: Chapter Diagnostics, Inc.
    Inventors: Chunlin Wang, Zhihai Ma, Baback Gharizadeh
  • Publication number: 20210189457
    Abstract: The present disclosure relates to methods of enzymatic treatment of double-stranded PCR amplified products for eliminating or minimizing primer-dimers in multiplex PCR reactions and for the efficient ligation of adapters. The present disclosure relates to methods and compositions that allow more efficient highly multiplex target amplification compared to conventional methods, compositions and kits by minimizing laboratory steps, eliminating primer-dimers and increasing the efficiency of adapter ligation. The disclosed methods use multiple target-specific primers for specific and selective amplification of targets in a subject's genome. The disclosed methods can be used for numerous downstream procedures and analysis, including DNA sequencing.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 24, 2021
    Inventors: Chunlin Wang, Zhihai Ma, Baback Gharizadeh
  • Patent number: 10976055
    Abstract: The present disclosure provides an electromagnetic heating device, comprising: an electromagnetic heating unit, an infrared heating unit and a MCU. The MCU is coupled with the electromagnetic heating unit and the infrared heating unit, so as to control the electromagnetic heating unit and the infrared heating unit to heat individually or simultaneously. The electromagnetic heating device of the present disclosure, since it comprises an electro electromagnetic heating unit and an infrared heating unit, the heating of the heating appliances of different materials can be performed, the application thereof is wide and unrestricted. In addition, since the infrared heating unit is comprised, the maximum heating power thereof is not limited by that of the coil disk.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: April 13, 2021
    Assignees: FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MANUFACTURING CO., LTD., MIDEA GROUP CO., LTD.
    Inventors: Hongjian Mao, Zhicai Liu, Zhifeng Wang, Yifan Chen, Jiangping Feng, Zhihai Ma, Dali Ou
  • Publication number: 20200385821
    Abstract: The present disclosure relates to compositions and methods for detection, identification and quantification of human papillomaviruses (HPV) and clinically significant sexually transmitted infections (STI) in a single amplification reaction. The disclosed method utilizes next-generation sequencing (NGS) to sequence amplified products. The present disclosure is also directed to kits containing primers specific to multiple HPV and STI targets.
    Type: Application
    Filed: June 7, 2019
    Publication date: December 10, 2020
    Inventors: Chunlin Wang, Zhihai Ma, Baback Gharizadeh
  • Publication number: 20200340035
    Abstract: The present disclosure relates to a method of target enrichment and amplification of selective target regions of genomes or nucleic acid samples and further analysis by systems such as NGS. The disclosure provides methods and kits that can be used in numerous downstream procedures including DNA sequencing. The disclosed methods can be utilized to sequence the target nucleic acid sequences such as to detect the presence of genetic variations for biological assays, assessment of disease, to count copies of target regions, and to allow such target enrichment prior to sequencing.
    Type: Application
    Filed: April 23, 2019
    Publication date: October 29, 2020
    Inventors: Chunlin Wang, Zhihai Ma, Baback Gharizadeh
  • Patent number: 10638551
    Abstract: Disclosed is an electromagnetic heating control circuit, comprising a control chip, a rectifier filter circuit, a resonant capacitor, a switching transistor, a drive circuit, and a synchronous voltage detection circuit. The switching transistor comprises a first end, a second end, and a control end. The first end is connected to a positive output end of the rectifier filter circuit by using the resonant capacitor. The second end is connected to a negative output end of the rectifier filter circuit by using a current limiting resistor. The control chip comprises a positive phase voltage input end, a negative phase voltage input end, a voltage detection end, and a signal input end. The positive phase voltage input end and the negative phase voltage input end detect voltages at two ends of the resonant capacitor by using the synchronous voltage detection circuit. The signal output end is connected to the control end by using the drive circuit.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: April 28, 2020
    Assignees: FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MANUFACTURING CO., LTD, MIDEA GROUP CO., LTD.
    Inventors: Zhicai Liu, Zhifeng Wang, Wenfeng Weng, Dali Ou, Zhihai Ma, Shirun Wu, Yifan Chen, Xinyuan Wang
  • Publication number: 20180245794
    Abstract: The present disclosure provides an electromagnetic heating device, comprising: an electromagnetic heating unit, an infrared heating unit and a MCU. The MCU is coupled with the electromagnetic heating unit and the infrared heating unit, so as to control the electromagnetic heating unit and the infrared heating unit to heat individually or simultaneously. The electromagnetic heating device of the present disclosure, since it comprises an electro electromagnetic heating unit and an infrared heating unit, the heating of the heating appliances of different materials can be performed, the application thereof is wide and unrestricted. In addition, since the infrared heating unit is comprised, the maximum heating power thereof is not limited by that of the coil disk.
    Type: Application
    Filed: March 2, 2018
    Publication date: August 30, 2018
    Inventors: Hongjian MAO, Zhicai LIU, Zhifeng WANG, Yifan CHEN, Jiangping FENG, Zhihai MA, Dali OU
  • Publication number: 20180020507
    Abstract: Disclosed is an electromagnetic heating control circuit, comprising a control chip, a rectifier filter circuit, a resonant capacitor, a switching transistor, a drive circuit, and a synchronous voltage detection circuit. The switching transistor comprises a first end, a second end, and a control end. The first end is connected to a positive output end of the rectifier filter circuit by using the resonant capacitor. The second end is connected to a negative output end of the rectifier filter circuit by using a current limiting resistor. The control chip comprises a positive phase voltage input end, a negative phase voltage input end, a voltage detection end, and a signal input end. The positive phase voltage input end and the negative phase voltage input end detect voltages at two ends of the resonant capacitor by using the synchronous voltage detection circuit. The signal output end is connected to the control end by using the drive circuit.
    Type: Application
    Filed: July 31, 2017
    Publication date: January 18, 2018
    Inventors: Zhicai LIU, Zhifeng WANG, Wenfeng WENG, Dali QU, Zhihai MA, Shirun WU, Yifan CHEN, Xinyuan WANG