Patents by Inventor Yongchao Liang

Yongchao Liang 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: 11732138
    Abstract: Water solvated polymeric dyes having a deep ultraviolet excitation spectrum are provided. The subject polymeric dyes include a light harvesting multichromophore having conjugation-modifying repeat units incorporated into the polymer backbone to provide segments of ?-conjugated co-monomers having limited ?-conjugation between segments. Polymeric tandem dyes are also provided that further include a signaling chromophore covalently linked to the multichromophore in energy-receiving proximity therewith. Also provided are labelled specific binding members that include the subject water solvated polymeric dyes. Methods of evaluating a sample for the presence of a target analyte and methods of labelling a target molecule in which the subject polymeric dyes find use are also provided. Systems and kits for practicing the subject methods are also provided.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: August 22, 2023
    Assignee: BECTON, DICKINSON AND COMPANY
    Inventors: Yongchao Liang, Jonathan Hollinger, Brian Wall, David Moureau, Lucy Zhao, Glenn P. Bartholomew
  • Publication number: 20230251264
    Abstract: Described herein are methods, compositions and articles of manufacture involving neutral conjugated polymers including methods for synthesis of neutral conjugated water-soluble polymers with linkers along the polymer main chain structure and terminal end capping units. Such polymers may serve in the fabrication of novel optoelectronic devices and in the development of highly efficient biosensors. The invention further relates to the application of these polymers in assay methods.
    Type: Application
    Filed: January 6, 2023
    Publication date: August 10, 2023
    Inventors: Brent S. Gaylord, Glenn P. Bartholomew, Russell A. Baldocchi, Janice W. Hong, William H. Huisman, Yongchao Liang, Trung Nguyen, Lan T. Tran, Jean M. Wheeler, Adrian Charles Vernon Palmer, Frank Peter Uckert
  • Publication number: 20230243837
    Abstract: Described herein are methods, compositions and articles of manufacture involving neutral conjugated polymers including methods for synthesis of neutral conjugated water-soluble polymers with linkers along the polymer main chain structure and terminal end capping units. Such polymers may serve in the fabrication of novel optoelectronic devices and in the development of highly efficient biosensors. The invention further relates to the application of these polymers in assay methods.
    Type: Application
    Filed: January 6, 2023
    Publication date: August 3, 2023
    Inventors: Brent S. Gaylord, Glenn P. Bartholomew, Russell A. Baldocchi, Janice W. Hong, William H. Huisman, Yongchao Liang, Trung Nguyen, Lan T. Tran, Jean M. Wheeler, Adrian Charles Vernon Palmer, Frank Peter Uckert
  • Publication number: 20230235177
    Abstract: Water solvated polymeric dyes having a deep ultraviolet excitation spectrum are provided. The subject polymeric dyes include a light harvesting multichromophore having conjugation-modifying repeat units incorporated into the polymer backbone to provide segments of ?-conjugated co-monomers having limited ?-conjugation between segments. Polymeric tandem dyes are also provided that further include a signaling chromophore covalently linked to the multichromophore in energy-receiving proximity therewith. Also provided are labelled specific binding members that include the subject water solvated polymeric dyes. Methods of evaluating a sample for the presence of a target analyte and methods of labelling a target molecule in which the subject polymeric dyes find use are also provided. Systems and kits for practicing the subject methods are also provided.
    Type: Application
    Filed: September 28, 2022
    Publication date: July 27, 2023
    Inventors: Yongchao Liang, Jonathan Hollinger, Brian Wall, David Moureau, Lucy Zhao, Glenn P. Bartholomew
  • Patent number: 11702547
    Abstract: Water soluble light harvesting multichromophores having pendant chromophore groups are provided. The light harvesting multichromophore has a polymeric backbone including non-conjugated repeat units and a plurality of pendant donor chromophore groups linked to a non-conjugated repeat unit of the polymeric backbone. A pendant chromophore group can be a BODIPY group substituted with one or more water soluble groups. Polymeric tandem dyes based on the subject multichromophores are provided that further include an acceptor fluorophore linked to a non-conjugated repeat unit of the polymeric backbone and configured in energy-receiving proximity to a pendant donor chromophore group. Also provided are labelled specific binding members that include the subject polymeric tandem dyes. Methods of evaluating a sample for a target analyte and methods of labelling a target molecule in which the subject polymeric tandem dyes find use are provided. Systems and kits for practicing the subject methods are also provided.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: July 18, 2023
    Assignee: BECTON, DICKINSON AND COMPANY
    Inventors: Glenn Bartholomew, Yongchao Liang, Brian Wall, David Moureau
  • Patent number: 11668716
    Abstract: Water soluble light harvesting multichromophores that have an ultraviolet absorption maximum are provided. In some embodiments, the multichromophores include a conjugated segment including a fused 6-5-6 tricyclic co-monomer and a UV absorbance-modifying co-monomer. The multichromophores may include an acceptor chromophore covalently linked to the multichromophore in energy-receiving proximity therewith. In some embodiments, a specific binding member is covalently linked to the multichromophore. Also provided are methods of evaluating a sample for the presence of a target analyte and methods of labelling a target molecule using compositions including the light harvesting multichromophores. Kits and systems for practicing the subject methods are also provided.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: June 6, 2023
    Assignee: BECTON, DICKINSON AND COMPANY
    Inventors: Yongchao Liang, Frank P. Uckert, Glenn P. Bartholomew, Barry E. Leonard, Brent S. Gaylord
  • Publication number: 20230152327
    Abstract: Water-soluble dipyrromethene-based dyes are provided herein. In certain cases, the water-soluble dye is a dipyrromethene-boron dye. Embodiments of the subject water-soluble dipyrromethene-based dyes have a narrow absorption maxima in the yellow green range close to or at the 561 nm laser line, and are suitable for use in tandem dye systems. Embodiments of the subject dyes efficiently transfer energy to an acceptor chromophore while a second dipyrromethene-based dye of the same or different chemical structure is within energy-receiving proximity therewith. Also provided herein are tandem dyes that include the subject water-soluble dipyrromethene-based dyes, e.g., as donor chromophores. Methods of evaluating a sample for the presence of a target analyte and methods of labelling a target molecule in which the subject dyes find use are also provided. Systems and kits for practicing the subject methods are also provided.
    Type: Application
    Filed: July 28, 2022
    Publication date: May 18, 2023
    Inventors: Glenn Bartholomew, Yongchao Liang, Brian Wall, David Michel Moureau, Jonathan Hollinger
  • Patent number: 11643556
    Abstract: Water solvated polymeric dyes and polymeric tandem dyes are provided. The polymeric dyes include a water solvated light harvesting multichromophore having a conjugated segment of aryl or heteroaryl co-monomers linked via covalent bonds, vinylene groups or ethynylene groups. The polymeric tandem dyes further include a signaling chromophore covalently linked to the multichromophore in energy-receiving proximity therewith. Also provided are labeled specific binding members that include the subject polymeric dyes. Methods of evaluating a sample for the presence of a target analyte and methods of labeling a target molecule in which the subject polymeric dyes find use are also provided. Systems and kits for practicing the subject methods are also provided.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: May 9, 2023
    Assignee: BECTON, DICKINSON AND COMPANY
    Inventors: Glenn P. Bartholomew, Yongchao Liang, Brent S. Gaylord
  • Publication number: 20230116275
    Abstract: Water soluble polymeric dyes and polymeric tandem dyes are provided. The polymeric dyes include a water solvated light harvesting multichromophore having a conjugated segment of aryl or heteroaryl co-monomers including branched non-ionic water soluble groups (WSG) comprising two or more water soluble polymers. In some cases, the branched non-ionic water soluble groups (WSG) of the present disclosure are capable of imparting solubility in water in excess of 50 mg/mL to the multichromophore. The polymeric tandem dyes further include a signaling chromophore covalently linked to the multichromophore in energy-receiving proximity therewith. Also provided are aggregation-resistant labelled specific binding members that include the subject water soluble polymeric dyes. Methods of evaluating a sample for the presence of a target analyte and methods of labelling a target molecule in which the subject polymeric dyes find use are also provided. Systems and kits for practicing the subject methods are also provided.
    Type: Application
    Filed: September 29, 2022
    Publication date: April 13, 2023
    Inventors: Glenn P. Bartholomew, Yongchao Liang
  • Publication number: 20230107794
    Abstract: Provided are multi-chromophore dyes. Embodiments of the multi-chromophore dyes include two or more dyes each comprising a water solubilizing group, two or more polymeric spacer domains and a linking moiety. Such multi-chromophore dyes can have advantageously high brightness by including multiple dyes while also reducing the rate of self-quenching. Also provided are methods of using such dyes, as well as kits that includes such dyes.
    Type: Application
    Filed: June 27, 2022
    Publication date: April 6, 2023
    Inventors: Yongchao Liang, Yu Chen
  • Patent number: 11499053
    Abstract: Water soluble polymeric dyes and polymeric tandem dyes are provided. The polymeric dyes include a water solvated light harvesting multichromophore having a conjugated segment of aryl or heteroaryl co-monomers including branched non-ionic water soluble groups (WSG) comprising two or more water soluble polymers. In some cases, the branched non-ionic water soluble groups (WSG) of the present disclosure are capable of imparting solubility in water in excess of 50 mg/mL to the multichromophore. The polymeric tandem dyes further include a signaling chromophore covalently linked to the multichromophore in energy-receiving proximity therewith. Also provided are aggregation-resistant labelled specific binding members that include the subject water soluble polymeric dyes. Methods of evaluating a sample for the presence of a target analyte and methods of labelling a target molecule in which the subject polymeric dyes find use are also provided. Systems and kits for practicing the subject methods are also provided.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: November 15, 2022
    Assignee: BECTON, DICKINSON AND COMPANY
    Inventors: Glenn P. Bartholomew, Yongchao Liang
  • Patent number: 11492493
    Abstract: Water solvated polymeric dyes having a deep ultraviolet excitation spectrum are provided. The subject polymeric dyes include a light harvesting multichromophore having conjugation-modifying repeat units incorporated into the polymer backbone to provide segments of ?-conjugated co-monomers having limited ?-conjugation between segments. Polymeric tandem dyes are also provided that further include a signaling chromophore covalently linked to the multichromophore in energy-receiving proximity therewith. Also provided are labelled specific binding members that include the subject water solvated polymeric dyes. Methods of evaluating a sample for the presence of a target analyte and methods of labelling a target molecule in which the subject polymeric dyes find use are also provided. Systems and kits for practicing the subject methods are also provided.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: November 8, 2022
    Assignee: BECTON, DICKINSON AND COMPANY
    Inventors: Yongchao Liang, Jonathan Hollinger, Brian Wall, David Moureau, Lucy Zhao, Glenn P. Bartholomew
  • Publication number: 20220348770
    Abstract: Water-soluble dipyrromethene-based dyes are provided herein. In certain cases, the water-soluble dye is a dipyrromethene-boron dye. Embodiments of the subject water-soluble dipyrromethene-based dyes have a narrow absorption maxima in the yellow green range close to or at the 561 nm laser line, and are suitable for use in tandem dye systems. Embodiments of the subject dyes efficiently transfer energy to an acceptor chromophore while a second dipyrromethene-based dye of the same or different chemical structure is within energy-receiving proximity therewith. Also provided herein are tandem dyes that include the subject water-soluble dipyrromethene-based dyes, e.g., as donor chromophores. Methods of evaluating a sample for the presence of a target analyte and methods of labelling a target molecule in which the subject dyes find use are also provided. Systems and kits for practicing the subject methods are also provided.
    Type: Application
    Filed: March 21, 2022
    Publication date: November 3, 2022
    Inventors: Glenn Bartholomew, Brian Wall, Jon Hollinger, Yongchao Liang
  • Publication number: 20220340813
    Abstract: Water-soluble fluorescent polymeric dyes and polymeric tandem dyes are provided. The polymeric dyes include a water solvated light harvesting multi-chromophore having a conjugated segment of aryl and/or heteroaryl co-monomers. The molar ratio of the co-monomers can be adjusted to provide beneficial technical properties, such as increased water solubility and improved absorption and emission spectra. For instance, the conjugated segment can have a first co-monomer substituted with a water-soluble group (WSG) and a second co-monomer, wherein the first co-monomer is in an amount that is equal or greater than the amount of the second co-monomer, multi-chromophore. The polymeric tandem dyes further include a signaling chromophore covalently linked to the multi-chromophore in energy-receiving proximity therewith. Also provided are aggregation-resistant labeled specific binding members that include the subject water-soluble polymeric dyes.
    Type: Application
    Filed: March 21, 2022
    Publication date: October 27, 2022
    Inventors: Yongchao Liang, Subodh Devendra Sonar
  • Publication number: 20220283169
    Abstract: Described herein are methods, compositions and articles of manufacture involving neutral conjugated polymers including methods for synthesis of neutral conjugated water-soluble polymers with linkers along the polymer main chain structure and terminal end capping units. Such polymers may serve in the fabrication of novel optoelectronic devices and in the development of highly efficient biosensors. The invention further relates to the application of these polymers in assay methods.
    Type: Application
    Filed: April 21, 2022
    Publication date: September 8, 2022
    Inventors: Brent S. Gaylord, Glenn P. Bartholomew, Russell A. Baldocchi, Janice W. Hong, William H. Huisman, Yongchao Liang, Trung Nguyen, Lan T. Tran, Jean M. Wheeler, Adrian Charles Vernon Palmer, Frank Peter Uckert
  • Publication number: 20220276254
    Abstract: Described herein are methods, compositions and articles of manufacture involving neutral conjugated polymers including methods for synthesis of neutral conjugated water-soluble polymers with linkers along the polymer main chain structure and terminal end capping units. Such polymers may serve in the fabrication of novel optoelectronic devices and in the development of highly efficient biosensors. The invention further relates to the application of these polymers in assay methods.
    Type: Application
    Filed: April 21, 2022
    Publication date: September 1, 2022
    Inventors: Brent S. Gaylord, Glenn P. Bartholomew, Russell A. Baldocchi, Janice W. Hong, William H. Huisman, Yongchao Liang, Trung Nguyen, Lan T. Tran, Jean M. Wheeler, Adrian Charles Vernon Palmer, Frank Peter Uckert
  • Publication number: 20220276255
    Abstract: Described herein are methods, compositions and articles of manufacture involving neutral conjugated polymers including methods for synthesis of neutral conjugated water-soluble polymers with linkers along the polymer main chain structure and terminal end capping units. Such polymers may serve in the fabrication of novel optoelectronic devices and in the development of highly efficient biosensors. The invention further relates to the application of these polymers in assay methods.
    Type: Application
    Filed: April 21, 2022
    Publication date: September 1, 2022
    Inventors: Brent S. Gaylord, Glenn P. Bartholomew, Russell A. Baldocchi, Janice W. Hong, William H. Huisman, Yongchao Liang, Trung Nguyen, Lan T. Tran, Jean M. Wheeler, Adrian Charles Vernon Palmer, Frank Peter Uckert
  • Publication number: 20220236278
    Abstract: Described herein are methods, compositions and articles of manufacture involving neutral conjugated polymers including methods for synthesis of neutral conjugated water-soluble polymers with linkers along the polymer main chain structure and terminal end capping units. Such polymers may serve in the fabrication of novel optoelectronic devices and in the development of highly efficient biosensors. The invention further relates to the application of these polymers in assay methods.
    Type: Application
    Filed: April 4, 2022
    Publication date: July 28, 2022
    Inventors: Brent S. Gaylord, Glenn P. Bartholomew, Russell A. Baldocchi, Janice W. Hong, William H. Huisman, Yongchao Liang, Trung Nguyen, Lan T. Tran, Jean M. Wheeler, Adrian Charles Vernon Palmer, Frank Peter Uckert
  • Patent number: 11333666
    Abstract: Described herein are methods, compositions and articles of manufacture involving neutral conjugated polymers including methods for synthesis of neutral conjugated water-soluble polymers with linkers along the polymer main chain structure and terminal end capping units. Such polymers may serve in the fabrication of novel optoelectronic devices and in the development of highly efficient biosensors. The invention further relates to the application of these polymers in assay methods.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: May 17, 2022
    Assignee: SIRIGEN II LIMITED
    Inventors: Brent S. Gaylord, Glenn P. Bartholomew, Russell A. Baldocchi, Janice W. Hong, William H. Huisman, Yongchao Liang, Trung Nguyen, Lan T. Tran, Jean M. Wheeler, Adrian Charles Vernon Palmer, Frank Peter Uckert
  • Publication number: 20220089877
    Abstract: Water soluble light harvesting multichromophores having pendant chromophore groups are provided. The light harvesting multichromophore has a polymeric backbone including non-conjugated repeat units and a plurality of pendant donor chromophore groups linked to a non-conjugated repeat unit of the polymeric backbone. A pendant chromophore group can be a BODIPY group substituted with one or more water soluble groups. Polymeric tandem dyes based on the subject multichromophores are provided that further include an acceptor fluorophore linked to a non-conjugated repeat unit of the polymeric backbone and configured in energy-receiving proximity to a pendant donor chromophore group. Also provided are labelled specific binding members that include the subject polymeric tandem dyes. Methods of evaluating a sample for a target analyte and methods of labelling a target molecule in which the subject polymeric tandem dyes find use are provided. Systems and kits for practicing the subject methods are also provided.
    Type: Application
    Filed: November 19, 2021
    Publication date: March 24, 2022
    Inventors: Glenn Bartholomew, Yongchao Liang, Brian Wall, David Moureau