Patents by Inventor Lakmal Nishantha Jayasinghe

Lakmal Nishantha Jayasinghe 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: 12258375
    Abstract: The invention relates to mutant forms of lysenin. The invention also relates to analyte characterisation using lysenin.
    Type: Grant
    Filed: November 8, 2023
    Date of Patent: March 25, 2025
    Assignee: Oxford Nanopore Technologies PLC
    Inventors: Mark John Bruce, James Anthony Clarke, Andrew John Heron, Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace
  • Publication number: 20250084472
    Abstract: The invention relates to a new method of characterising a target RNA polynucleotide by taking one or more measurements as the target RNA polynucleotide moves with respect to a transmembrane pore. The movement is controlled by a DNA helicase. The invention also relates to a modified RNA construct wherein the RNA polynucleotide has been modified to increase DNA helicase binding thereto.
    Type: Application
    Filed: September 19, 2024
    Publication date: March 13, 2025
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Daniel Ryan Garalde, Andrew John Heron, Lakmal Nishantha Jayasinghe, Daniel John Turner, James White
  • Publication number: 20250066424
    Abstract: The present invention relates to novel protein pores and their uses in analyte detection and characterisation. The invention particularly relates to an isolated pore complex formed by a CsgG-like pore and a modified CsgF peptide, or a homologue or mutant thereof, thereby incorporating an additional channel constriction or reader head in the nanopore. The invention further relates to a transmembrane pore complex and methods for production of the pore complex and for use in molecular sensing and nucleic acid sequencing applications.
    Type: Application
    Filed: August 7, 2024
    Publication date: February 27, 2025
    Applicants: VIB VZW, Vrije Universiteit Brussel, Oxford Nanopore Technologies PLC
    Inventors: Han Remaut, Sander Egbert Van Der Verren, Nani Van Gerven, Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace, Pratik Raj Singh, Richard George Hambley, Michael Robert Jordan, John Joseph Kilgour
  • Patent number: 12227800
    Abstract: The invention relates to mutant forms of CsgG. The invention also relates to analyte detection and characterisation using CsgG.
    Type: Grant
    Filed: January 26, 2023
    Date of Patent: February 18, 2025
    Assignee: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace
  • Publication number: 20250042952
    Abstract: Provided is a method of characterising a polynucleotide using a transmembrane pore, wherein the pore is a double pore comprising a first Csg G pore, or a homologue thereof, and second CsgG pore, or a homologue thereof.
    Type: Application
    Filed: May 20, 2024
    Publication date: February 6, 2025
    Applicants: Oxford Nanopore Technologies PLC, VIB VZW, Vrije Universiteit Brussel
    Inventors: Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace, Pratik Raj Singh, Richard George Hambley, Michael Robert Jordan, Han Remaut
  • Publication number: 20240417704
    Abstract: The invention relates to modified helicases with reduced unbinding from polynucleotides. The helicases can be used to control the movement of polynucleotides and are particularly useful for sequencing polynucleotides.
    Type: Application
    Filed: July 2, 2024
    Publication date: December 19, 2024
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Andrew John Heron, James Anthony Clarke, Ruth Moysey, Elizabeth Jayne Wallace, Mark John Bruce, Lakmal Nishantha Jayasinghe, Domenico Caprotti, Szabolcs Soeroes, Luke McNeill, David Antoni Alves, Rebecca Victoria Bowen, John Milton
  • Publication number: 20240402121
    Abstract: The invention relates generally to a method of detecting and/or analysing target polymers, especially target polynucleotides, using a biological pore. The invention also relates to a novel system for carrying out the method. The method has many uses. In particular, the method may be used for diagnosis, detection of polymorphisms and V(D)J repertoire analysis.
    Type: Application
    Filed: October 4, 2022
    Publication date: December 5, 2024
    Applicants: Oxford Nanopore Technologies PLC, Monash University
    Inventors: Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace, Richard Alexander Gutierrez, Michelle Anne Dunstone, Bradley Alan Spicer
  • Publication number: 20240368683
    Abstract: The invention relates to mutant forms of CsgG. The invention also relates to analyte detection and characterization using CsgG.
    Type: Application
    Filed: May 15, 2024
    Publication date: November 7, 2024
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace
  • Patent number: 12084477
    Abstract: The present invention relates to novel protein pores and their uses in analyte detection and characterisation. The invention particularly relates to an isolated pore complex formed by a CsgG-like pore and a modified CsgF peptide, or a homologue or mutant thereof, thereby incorporating an additional channel constriction or reader head in the nanopore. The invention further relates to a transmembrane pore complex and methods for production of the pore complex and for use in molecular sensing and nucleic acid sequencing applications.
    Type: Grant
    Filed: September 16, 2022
    Date of Patent: September 10, 2024
    Assignees: VIB VZW, Vrije Universiteit Brussel, Oxford Nanopore Technologies PLC
    Inventors: Han Remaut, Sander Egbert Van Der Verren, Nani Van Gerven, Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace, Pratik Raj Singh, Richard George Hambley, Michael Robert Jordan, John Joseph Kilgour
  • Publication number: 20240287485
    Abstract: The invention relates to modified Dda helicases which can be used to control the movement of polynucleotides and are particularly useful for sequencing polynucleotides.
    Type: Application
    Filed: March 5, 2024
    Publication date: August 29, 2024
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Andrew John Heron, Rebecca Victoria Bowen, Mark John Bruce, Lakmal Nishantha Jayasinghe, Joseph Hargreaves Lloyd, Szabolcs Soeroes, Elizabeth Jayne Wallace, Christopher Peter Youd
  • Publication number: 20240254172
    Abstract: The invention relates to mutant forms of lysenin. The invention also relates to analyte characterisation using the mutant forms of lysenin.
    Type: Application
    Filed: February 13, 2024
    Publication date: August 1, 2024
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Nishantha Jayasinghe, Mark John Bruce, Luke McNeill, Ramiz Iqbal Nathani, Pratik Raj Singh, Neil Roger Wood, Stephen Robert Young
  • Patent number: 12024541
    Abstract: Provided is a method of characterising a polynucleotide using a transmembrane pore, wherein the pore is a double pore comprising a first Csg G pore, or a homologue thereof, and a second CsgG pore, or a homologue thereof.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: July 2, 2024
    Assignees: Oxford Nanopore Technologies PLC, VIB VZW, Vrije Universiteit Brussel
    Inventors: Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace, Pratik Raj Singh, Richard George Hambley, Michael Jordan, Han Remaut
  • Publication number: 20240199711
    Abstract: The invention relates to mutant forms of lysenin. The invention also relates to analyte characterisation using lysenin.
    Type: Application
    Filed: November 8, 2023
    Publication date: June 20, 2024
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Mark John Bruce, James Anthony Clarke, Andrew John Heron, Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace
  • Publication number: 20240117422
    Abstract: The invention relates to mutant forms of CsgG. The invention also relates to analyte detection and characterization using CsgG.
    Type: Application
    Filed: May 5, 2023
    Publication date: April 11, 2024
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace
  • Publication number: 20240117421
    Abstract: The invention relates to mutant forms of CsgG. The invention also relates to analyte detection and characterisation using CsgG.
    Type: Application
    Filed: January 26, 2023
    Publication date: April 11, 2024
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Nishantha Jayasinghe, Elizabeth Yayne Wallace
  • Patent number: 11920193
    Abstract: Methods of characterizing an analyte using a detector such as a nanopore and an enzyme are provided. One aspect features methods for characterizing a double-stranded polynucleotide using a detector, e.g., without using a hairpin connecting a template and a complement of the double-stranded polynucleotide. Another aspect features methods for characterizing an analyte using a tag-modified nanopore with increased sensitivity and/or higher throughput. Compositions and systems including, e.g., adaptors for attachment to double-stranded polynucleotides and tag-modified nanopores, which can be used in the methods are also provided.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: March 5, 2024
    Assignee: Oxford Nanopore Technologies PLC
    Inventors: James Anthony Clarke, James White, Richard Muscat, Jessica Mary May Johnson, Ramiz Iqbal Nathani, Andrew John Heron, Mark John Bruce, Lakmal Nishantha Jayasinghe, Domenico Caprotti, David Jackson Stoddart, Rebecca Victoria Bowen, Christopher James Wright, Paul Richard Moody
  • Publication number: 20240060126
    Abstract: The invention relates to improving the movement of a target polynucleotide with respect to a transmembrane pore when the movement is controlled by a polynucleotide binding protein.
    Type: Application
    Filed: June 27, 2023
    Publication date: February 22, 2024
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace, Jonathan Bankes Pugh, Richard George Hambley, Neil Roger Wood, Clive Gavin Brown, James White, Andrew John Heron, Mark John Bruce, Christopher Peter Youd, Rebecca Victoria Bowen
  • Publication number: 20230295715
    Abstract: The invention relates to mutant forms of CsgG. The invention also relates to analyte detection and characterisation using CsgG.
    Type: Application
    Filed: January 26, 2023
    Publication date: September 21, 2023
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Nishantha Jayasinghe, Elizabeth Yayne Wallace
  • Publication number: 20230272017
    Abstract: Provided herein relate to modified or mutant forms of secretin and compositions comprising the same. In particular, the modified or mutant forms of secretin permits efficient capture and/or translocation of an analyte through the modified or mutant secretin nanopores. Methods for using unmodified secretin or the modified or mutant forms of secretin and compositions, for example, for characterizing an analyte, e.g., a target polynucleotide, are also provided.
    Type: Application
    Filed: October 11, 2022
    Publication date: August 31, 2023
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace, Pratik Raj Singh
  • Patent number: 11739377
    Abstract: The invention relates to improving the movement of a target polynucleotide with respect to a transmembrane pore when the movement is controlled by a polynucleotide binding protein. The invention also relates to improved transmembrane pores and polynucleotide binding proteins.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: August 29, 2023
    Assignee: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Nishantha Jayasinghe, Elizabeth Jayne Wallace, Jonathan Bankes Pugh, Richard George Hambley, Neil Roger Wood, Clive Gavin Brown, James White, Andrew John Heron, Mark Bruce, Christopher Peter Youd, Rebecca Victoria Bowen