Patents by Inventor Weishi Zhang

Weishi Zhang 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: 20240043905
    Abstract: A sample pretreatment kit for detecting virus infectivity includes a photoactivatable dye capable of intercalating into a nucleic acid, and a nuclease capable of degrading the nucleic acid. The photoactivatable dye includes PMA dye, PMAxx dye, EMA, platinum compounds, or palladium compounds. The method for detecting virus infectivity includes steps of: (a) dividing a clinical sample into a test sample and a control sample; (b) treating the test sample with a photoactivatable dye and a nuclease; (c) exposing the test sample to a light for photoactivation; (d) amplifying a target nucleic acid in the test sample and the control sample; and (e) determining virus infectivity based on amplification results of the test sample and the control sample.
    Type: Application
    Filed: August 1, 2023
    Publication date: February 8, 2024
    Inventors: Yong Zhang, Jia Hui Esther Boey, Quanke Long, Kun-Nan Tsai, Weishi Zhang, Jiaojiao Li, Xiaozhi Zhao
  • Publication number: 20230235275
    Abstract: A transport medium for a microorganism is provided. The transport medium includes at least one chaotropic substance, at least one acid, at least one buffer, at least one chelating agent, and at least one detergent. The transport medium is able to inactivate bacteria and viruses at the time of sample collection, stabilize and preserve microbial nucleic acids at ambient temperature for extended periods of time.
    Type: Application
    Filed: January 18, 2023
    Publication date: July 27, 2023
    Inventors: You Bin Lin, Jia Jun Lee, Weishi Zhang
  • Publication number: 20220145351
    Abstract: A method for detecting infectivity of a human coronavirus is provided. The method includes steps of: (a) dividing a testing sample into a first sample and a second sample; (b) treating the first sample with an intercalating dye or chemical; (c) exposing the first sample to a light for photo-activation; (d) amplifying targeted nucleic acids in the first sample and the second sample; and (e) determining infectivity of the human coronavirus based on amplification results of the first sample and the second sample.
    Type: Application
    Filed: November 5, 2021
    Publication date: May 12, 2022
    Inventors: Yong Zhang, Jia Hui Esther Boey, Weishi Zhang, Quanke Long, Jiaojiao Li, Xiaozhi Zhao, Kun-Nan Tsai
  • Patent number: 11118236
    Abstract: A kit for simultaneously detecting HSV1 and HSV2 includes a forward primer and a reverse primer specific to HSV1, and a forward primer and a reverse primer specific to HSV2. The forward primer specific to HSV1 has a sequence of SEQ ID NO: 1 or SEQ ID NO: 4, and the reverse primer specific to HSV1 has a sequence of SEQ ID NO: 2 or SEQ ID NO: 7. The forward primer specific to HSV2 has a sequence of SEQ ID NO: 6, and the reverse primer specific to HSV2 has a sequence of SEQ ID NO: 7.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: September 14, 2021
    Assignee: DELTA ELECTRONICS INT'L (SINGAPORE) PTE LTD
    Inventors: Li Quan Koh, You Bin Lin, Weishi Zhang
  • Patent number: 10947586
    Abstract: An additive composition used in a loop mediated isothermal amplification (LAMP) reaction for reducing a threshold time for a positive sample includes but not limited to EDTA, EGTA, BSA, DMSO, nonionic surfactants, and polymers, and the additive composition used in LAMP reactions includes at least one of the above mentioned additives and may be any combination use of the additives.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: March 16, 2021
    Assignee: DELTA ELECTRONICS INT'L (SINGAPORE) PTE LTD
    Inventors: Junxin Liang, Casthri Krishnamurthy, Shuwen An, Kah Sin Loh, Weishi Zhang
  • Patent number: 10654038
    Abstract: A nucleic acid analysis apparatus with isothermal based amplification includes a chamber, a fluid delivery unit, a thermal unit, a rotational driven unit and at least one optical unit. The chamber includes a cartridge mounted therein. The fluid delivery unit is connected with the chamber and adapted to transport reagents within the cartridge for sample purification and/or nucleic acid extraction. The thermal unit is disposed in the chamber and adapted to provide a predefined temperature for nucleic acid amplification. The rotational driven unit is connected with the chamber and capable of rotating the cartridge with a predefined program. The at least one optical unit is disposed on the chamber and includes plural optical components for detection.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: May 19, 2020
    Assignee: DELTA ELECTRONICS INT'L (SINGAPORE) PTE LTD
    Inventors: Qian Liang, Bo Ma, Shuwen An, Weishi Zhang
  • Publication number: 20190249265
    Abstract: A kit for simultaneously detecting HSV1 and HSV2 includes a forward primer and a reverse primer specific to HSV1, and a forward primer and a reverse primer specific to HSV2. The forward primer specific to HSV1 has a sequence of SEQ ID NO: 1 or SEQ ID NO: 4, and the reverse primer specific to HSV1 has a sequence of SEQ ID NO: 2 or SEQ ID NO: 7. The forward primer specific to HSV2 has a sequence of SEQ ID NO: 6, and the reverse primer specific to HSV2 has a sequence of SEQ ID NO: 7.
    Type: Application
    Filed: August 6, 2018
    Publication date: August 15, 2019
    Inventors: Li Quan Koh, You Bin Lin, Weishi Zhang
  • Publication number: 20190218604
    Abstract: An additive composition used in a loop mediated isothermal amplification (LAMP) reaction for reducing a threshold time for a positive sample includes but not limited to EDTA, EGTA, BSA, DMSO, nonionic surfactants, and polymers, and the additive composition used in LAMP reactions includes at least one of the above mentioned additives and may be any combination use of the additives.
    Type: Application
    Filed: May 10, 2018
    Publication date: July 18, 2019
    Inventors: Junxin Liang, Casthri Krishnamurthy, Shuwen An, Kah Sin Loh, Weishi Zhang
  • Publication number: 20180071728
    Abstract: A nucleic acid analysis apparatus with isothermal based amplification includes a chamber, a fluid delivery unit, a thermal unit, a rotational driven unit and at least one optical unit. The chamber includes a cartridge mounted therein. The fluid delivery unit is connected with the chamber and adapted to transport reagents within the cartridge for sample purification and/or nucleic acid extraction. The thermal unit is disposed in the chamber and adapted to provide a predefined temperature for nucleic acid amplification. The rotational driven unit is connected with the chamber and capable of rotating the cartridge with a predefined program. The at least one optical unit is disposed on the chamber and includes plural optical components for detection.
    Type: Application
    Filed: September 11, 2017
    Publication date: March 15, 2018
    Inventors: Qian Liang, Bo Ma, Shuwen An, Weishi Zhang
  • Patent number: D857226
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: August 20, 2019
    Assignee: DELTA ELECTRONICS INT'L (SINGAPORE) PTE LTD
    Inventors: Qian Liang, Bo Ma, Shuwen An, Weishi Zhang