Patents by Inventor Daiwei Shen

Daiwei Shen 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: 20240026433
    Abstract: Disclosed is a method of performing a non-isothermal nucleic acid amplification reaction, the method comprising the steps of: (a) mixing a target sequence with one or more complementary single stranded primers in conditions which permit a hybridisation event in which the primers hybridise to the target, which hybridisation event, directly or indirectly, leads to the formation of a duplex structure comprising two nicking sites disposed at or near opposite ends of the duplex; and performing an amplification process by; (b) using a nicking enzyme to cause a nick at each of said nicking sites in the strands of the duplex; (c) using a polymerase to extend the nicked strands to as to form newly synthesised nucleic acid, which extension with the polymerase recreates nicking sites; (d) repeating steps (b) and (c) as desired so as to cause the production of multiple copies of the newly synthesised nucleic acid; characterised in that the temperature at which the method is performed is non-isothermal, and subject to shu
    Type: Application
    Filed: April 20, 2023
    Publication date: January 25, 2024
    Inventors: Daiwei Shen, Bryan Kraynack, Victor Perez, Jarrod Provins
  • Publication number: 20230340579
    Abstract: Disclosed is a method of performing a non-isothermal nucleic acid amplification reaction, the method comprising the steps of: (a) mixing a target sequence with one or more complementary single stranded primers in conditions which permit a hybridisation event in which the primers hybridise to the target, which hybridisation event, directly or indirectly, leads to the formation of a duplex structure comprising two nicking sites disposed at or near opposite ends of the duplex; and performing an amplification process by; (b) causing a nick at each of said nicking sites in the strands of the duplex; (c) using a polymerase to extend the nicked strands so as to form newly synthesised nucleic acid, which extension with the polymerase recreates nicking sites; (d) repeating steps (b) and (c) as desired so as to cause the production of multiple copies of the newly synthesised nucleic acid; characterised in that the temperature at which the method is performed is non-isothermal, and subject to a reduction of at least 2°
    Type: Application
    Filed: January 26, 2023
    Publication date: October 26, 2023
    Inventors: Jarrod Provins, Daiwei Shen, Bryan Kraynack
  • Patent number: 11655496
    Abstract: A method of performing a non-isothermal nucleic acid amplification reaction, the method comprising the steps of: (a) mixing a target sequence with one or more complementary single stranded primers in conditions which permit a hybridization event in which the primers hybridize to the target, which hybridization event, directly or indirectly, leads to the formation of a duplex structure comprising two nicking sites disposed at or near opposite ends of the duplex; and performing an amplification process by; (b) using a nicking enzyme to cause a nick at each of said nicking sites in the strands of the duplex; (c) using a polymerase to extend the nicked strands so as to form newly synthesized nucleic acid, which extension with the polymerase recreates nicking sites; (d) repeating steps (b) and (c) as desired so as to cause the production of multiple copies of the newly synthesized nucleic acid.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: May 23, 2023
    Assignee: LumiraDx UK Ltd.
    Inventors: Daiwei Shen, Bryan Kraynack, Victor Perez, Jarrod Provins
  • Patent number: 11591643
    Abstract: Disclosed is a method of performing a non-isothermal nucleic acid amplification reaction, wherein the temperature at which the method is performed is non-isothermal and subject to a reduction of at least 2° C. during amplification process steps. The present invention provides an improved nucleic acid amplification technique having one or more advantages over existing techniques including, for example, decreased reaction time, increased yield, and decreased non-specific amplification products.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: February 28, 2023
    Assignee: LumiraDx UK Ltd.
    Inventors: Jarrod Provins, Daiwei Shen, Bryan Kraynack
  • Publication number: 20220403459
    Abstract: Disclosed is a composition comprising a nicking enzyme and a water-soluble rubidium salt, and a method of performing a reaction catalysed by a nicking enzyme including the presence of a water-soluble rubidium salt in the reaction.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 22, 2022
    Inventors: Jarrod PROVINS, Victor PEREZ, Daiwei SHEN, Anthony FARINA, Bryan KRAYNACK
  • Publication number: 20220098652
    Abstract: This invention relates to compositions, methods and kits for detecting the presence or absence of a bacterial species in a biological sample using isothermal nucleic acid amplification.
    Type: Application
    Filed: October 26, 2021
    Publication date: March 31, 2022
    Inventors: Daiwei Shen, Richard Roth, Honghua Zhang
  • Patent number: 11186864
    Abstract: This invention relates to compositions, methods and kits for detecting the presence or absence of a bacterial species in a biological sample using isothermal nucleic acid amplification.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: November 30, 2021
    Assignee: IONIAN TECHNOLOGIES, LLC
    Inventors: Daiwei Shen, Richard Roth, Honghua Zhang
  • Publication number: 20210292826
    Abstract: Disclosed is a method of performing a non-isothermal nucleic acid amplification reaction, the method comprising the steps of: (a) mixing a target sequence with one or more complementary single stranded primers in conditions which permit a hybridisation event in which the primers hybridise to the target, which hybridisation event, directly or indirectly, leads to the formation of a duplex structure comprising two nicking sites disposed at or near opposite ends of the duplex; and performing an amplification process by; (b) using a nicking enzyme to cause a nick at each of said nicking sites in the strands of the duplex; (c) using a polymerase to extend the nicked strands to as to form newly synthesised nucleic acid, which extension with the polymerase recreates nicking sites; (d) repeating steps (b) and (c) as desired so as to cause the production of multiple copies of the newly synthesised nucleic acid; characterised in that the temperature at which the method is performed is non-isothermal, and subject to shu
    Type: Application
    Filed: January 2, 2019
    Publication date: September 23, 2021
    Applicant: LUMIRADX UK LTD
    Inventors: Daiwei SHEN, Bryan KRAYNACK, Victor PEREZ, Jarrod PROVINS
  • Publication number: 20190338347
    Abstract: This invention relates to compositions, methods and kits for detecting the presence or absence of a bacterial species in a biological sample using isothermal nucleic acid amplification.
    Type: Application
    Filed: May 20, 2019
    Publication date: November 7, 2019
    Inventors: Daiwei Shen, Richard Roth, Honghua Zhang
  • Publication number: 20190226015
    Abstract: Disclosed is a method of performing a non-isothermal nucleic acid amplification reaction, the method comprising the steps of: (a) mixing a target sequence with one or more complementary single stranded primers in conditions which permit a hybridisation event in which the primers hybridise to the target, which hybridisation event, directly or indirectly, leads to the formation of a duplex structure comprising two nicking sites disposed at or near opposite ends of the duplex; and performing an amplification process by; (b) causing a nick at each of said nicking sites in the strands of the duplex; (c) using a polymerase to extend the nicked strands so as to form newly synthesised nucleic acid, which extension with the polymerase recreates nicking sites; (d) repeating steps (b) and (c) as desired so as to cause the production of multiple copies of the newly synthesised nucleic acid; characterised in that the temperature at which the method is performed is non-isothermal, and subject to a reduction of at least 2°
    Type: Application
    Filed: June 30, 2017
    Publication date: July 25, 2019
    Applicant: LUMIRADX UK LTD
    Inventors: Jarrod PROVINS, Daiwei SHEN, Bryan KRAYNACK
  • Patent number: 10329601
    Abstract: This invention relates to compositions, methods and kits for detecting the presence or absence of a bacterial species in a biological sample using isothermal nucleic acid amplification.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: June 25, 2019
    Assignee: Ionian Technologies, Inc.
    Inventors: Daiwei Shen, Richard Roth, Honghua Zhang
  • Publication number: 20170183714
    Abstract: This invention relates to compositions, methods and kits for detecting the presence or absence of a bacterial species in a biological sample using isothermal nucleic acid amplification.
    Type: Application
    Filed: December 27, 2016
    Publication date: June 29, 2017
    Inventors: Daiwei Shen, Richard Roth, Honghua Zhang
  • Publication number: 20090176724
    Abstract: The invention is relates to splice variants of basal transcription factors and other transcriptional modulators, the use of expression analyses of the same as a diagnostic and prognostic tool, and the targeting of such splice variants for therapeutic purposes, particularly in relation to the treatment of cancer.
    Type: Application
    Filed: June 30, 2005
    Publication date: July 9, 2009
    Inventors: Daiwei Shen, Toomas Neuman, Kaia Palm