Patents by Inventor Zhenjun Diwu

Zhenjun Diwu 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: 20250199009
    Abstract: The disclosure relates in general to click-chemistry functionalized compounds, biological conjugates and conjugation methods for use in biological assays.
    Type: Application
    Filed: December 19, 2023
    Publication date: June 19, 2025
    Inventors: Zhenjun DIWU, Jianjun HE, Jixiang LIU
  • Patent number: 12297383
    Abstract: Fluorescent water soluble conjugated polymers including polycyclic aromatic comonomers are provided. The conjugated polymers can be linked to an acceptor fluorescent dye. The conjugated polymers find use in conjugates with biological substrates having applications in a variety of applications including methods of analyte detection.
    Type: Grant
    Filed: October 16, 2023
    Date of Patent: May 13, 2025
    Assignee: AAT Bioquest, Inc.
    Inventors: Zhenjun Diwu, Haitao Guo, Jixiang Liu, Qin Zhao, Ruogu Peng
  • Publication number: 20250130142
    Abstract: This disclosure provides cyanine dye compounds having linked hydrogen bond-forming groups that can be used for detecting nucleic acids, particularly for fluorescent staining of DNA, in a biological sample. We found that the simultaneous incorporation of at least two hydrogen bond-forming groups (HBGs) into such a nucleic acid stain can provide for crosslinking interactions between the stain and the target nucleic acid, and lead to a significant increase in the detection sensitivity without substantially increasing undesirable cytotoxicity or mutagenicity properties of the dye compounds. The cyanine dye compounds can have a cyanine structure that connects two particular fused heterocycle ring systems, where at least two HBGs are connected to the core structure through linkers. Also provided are nucleic acid complexes including the cyanine dye compounds, and methods of using the compounds to detect nucleic acids in a biological sample.
    Type: Application
    Filed: October 21, 2024
    Publication date: April 24, 2025
    Inventors: Zhenjun DIWU, Haitao GUO, Lok N. NEUPANE, Deven PATEL
  • Publication number: 20250102497
    Abstract: Cyanine compounds that are substantially non-fluorescent or only weakly fluorescent are useful as energy acceptors. Chemically reactive compounds possess utility for labeling a wide variety of substances, including biomolecules with the resulting conjugates being highly useful for a variety of energy-transfer assays and applications.
    Type: Application
    Filed: September 27, 2023
    Publication date: March 27, 2025
    Applicant: AAT Bioquest, Inc.
    Inventors: Zhenjun DIWU, Guangyao GAO, Jixiang LIU, Haitao GUO
  • Publication number: 20250052650
    Abstract: This disclosure provides cyanine dye compounds having linked hydrogen bond-forming groups that can be used for detecting nucleic acids, particularly for fluorescent staining of DNA, in a biological sample. We found that the simultaneous incorporation of at least two hydrogen bond-forming groups (HBGs) into such a nucleic acid stain can provide for crosslinking interactions between the stain and the target nucleic acid, and lead to a significant increase in the detection sensitivity without substantially increasing undesirable cytotoxicity or mutagenicity properties of the dye compounds. The cyanine dye compounds can have a cyanine structure that connects two particular fused heterocycle ring systems, where at least two HBGs are connected to the core structure through linkers. Also provided are nucleic acid complexes including the cyanine dye compounds, and methods of using the compounds to detect nucleic acids in a biological sample.
    Type: Application
    Filed: October 15, 2024
    Publication date: February 13, 2025
    Inventors: Zhenjun DIWU, Haitao GUO, Lok N. NEUPANE, Deven PATEL
  • Patent number: 12169166
    Abstract: This disclosure provides cyanine dye compounds having linked hydrogen bond-forming groups that can be used for detecting nucleic acids, particularly for fluorescent staining of DNA, in a biological sample. We found that the simultaneous incorporation of at least two hydrogen bond-forming groups (HBGs) into such a nucleic acid stain can provide for crosslinking interactions between the stain and the target nucleic acid, and lead to a significant increase in the detection sensitivity without substantially increasing undesirable cytotoxicity or mutagenicity properties of the dye compounds. The cyanine dye compounds can have a cyanine structure that connects two particular fused heterocycle ring systems, where at least two HBGs are connected to the core structure through linkers. Also provided are nucleic acid complexes including the cyanine dye compounds, and methods of using the compounds to detect nucleic acids in a biological sample.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: December 17, 2024
    Assignee: AAT BIOQUEST, INC.
    Inventors: Zhenjun Diwu, Haitao Guo, Lok N. Neupane, Deven Patel
  • Publication number: 20240410907
    Abstract: Fluorescent dyes useful for preparing fluorescent metal ion indicators, the fluorescent indicators themselves, and the use of the fluorescent indicators for the detection, discrimination and quantification of metal cations are provided.
    Type: Application
    Filed: June 12, 2023
    Publication date: December 12, 2024
    Inventors: Jixiang Liu, Zhenjun Diwu, Deven Patel
  • Publication number: 20240272146
    Abstract: The disclosure provides chromogenic and fluorogenic compounds comprising amino acid or peptide appendages that are capable of detecting an activity in a bioassay. Also provided herein are methods for detecting a biological activity in a sample with the subject chromogenic and fluorogenic compounds. In one embodiment, provided herein is a method for detecting endotoxin in a sample. Further provided herein are kits including the subject chromogenic and fluorogenic compounds for detecting a biological activity in a sample.
    Type: Application
    Filed: March 22, 2022
    Publication date: August 15, 2024
    Inventors: Zhenjun DIWU, Qinglin MENG, Ruogu PENG, Qin ZHAO
  • Publication number: 20240077489
    Abstract: Styryl compounds useful for preparing biological detections probes, and the use of the Styryl compounds for the detection, discrimination and quantification of biological targets.
    Type: Application
    Filed: October 16, 2023
    Publication date: March 7, 2024
    Inventors: Zhenjun Diwu, Zhen Luo, Jixiang Liu, Pengfei Dong
  • Publication number: 20240052238
    Abstract: Fluorescent water soluble conjugated polymers including polycyclic aromatic comonomers are provided. The conjugated polymers can be linked to an acceptor fluorescent dye. The conjugated polymers find use in conjugates with biological substrates having applications in a variety of applications including methods of analyte detection.
    Type: Application
    Filed: October 16, 2023
    Publication date: February 15, 2024
    Applicant: AAT Bioquest, Inc.
    Inventors: Zhenjun DIWU, Haitao GUO, Jixiang LIU, Qin ZHAO, Ruogu PENG
  • Patent number: 11827824
    Abstract: Fluorescent water soluble conjugated polymers including polycyclic aromatic comonomers are provided. The conjugated polymers can be linked to an acceptor fluorescent dye. The conjugated polymers find use in conjugates with biological substrates having applications in a variety of applications including methods of analyte detection.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: November 28, 2023
    Assignee: AAT BIOQUEST, INC.
    Inventors: Zhenjun Diwu, Haitao Guo, Jixiang Liu, Qin Zhao, Ruogu Peng
  • Patent number: 11821901
    Abstract: Styryl compounds useful for preparing biological detections probes, and the use of the Styryl compounds for the detection, discrimination and quantification of biological targets.
    Type: Grant
    Filed: August 15, 2020
    Date of Patent: November 21, 2023
    Assignee: AAT Bioquest, Inc.
    Inventors: Zhenjun Diwu, Zhen Luo, Jixiang Liu, Pengfei Dong
  • Publication number: 20230131000
    Abstract: The invention provides for UV excitable polyfluorene based conjugates and their use in methods of analyte detection.
    Type: Application
    Filed: January 28, 2021
    Publication date: April 27, 2023
    Inventors: Zhenjun Diwu, Haitao Guo, Ruogu Peng, Travis Jennings
  • Publication number: 20220260464
    Abstract: This disclosure provides cyanine dye compounds having linked hydrogen bond-forming groups that can be used for detecting nucleic acids, particularly for fluorescent staining of DNA, in a biological sample. We found that the simultaneous incorporation of at least two hydrogen bond-forming groups (HBGs) into such a nucleic acid stain can provide for crosslinking interactions between the stain and the target nucleic acid, and lead to a significant increase in the detection sensitivity without substantially increasing undesirable cytotoxicity or mutagenicity properties of the dye compounds. The cyanine dye compounds can have a cyanine structure that connects two particular fused heterocycle ring systems, where at least two HBGs are connected to the core structure through linkers. Also provided are nucleic acid complexes including the cyanine dye compounds, and methods of using the compounds to detect nucleic acids in a biological sample.
    Type: Application
    Filed: February 16, 2021
    Publication date: August 18, 2022
    Inventors: Zhenjun Diwu, Haitao Guo, Lok N. Neupane, Deven Patel
  • Publication number: 20220089943
    Abstract: Fluorescent water soluble conjugated polymers including polycyclic aromatic comonomers are provided. The conjugated polymers can be linked to an acceptor fluorescent dye. The conjugated polymers find use in conjugates with biological substrates having applications in a variety of applications including methods of analyte detection.
    Type: Application
    Filed: December 3, 2021
    Publication date: March 24, 2022
    Inventors: Zhenjun Diwu, Haitao Guo, Jixiang Liu, Qin Zhao, Ruogu Peng
  • Patent number: 11237170
    Abstract: Styryl compounds useful for preparing biological detections probes, and the use of the Styryl compounds for the detection, discrimination and quantification of biological targets.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: February 1, 2022
    Assignee: AAT BIOQUEST, INC.
    Inventors: Zhenjun Diwu, Zhen Luo, Jixiang Liu, Pengfei Dong
  • Patent number: 11220628
    Abstract: Fluorescent water soluble conjugated polymers including polycyclic aromatic comonomers are provided. The conjugated polymers can be linked to an acceptor fluorescent dye. The conjugated polymers find use in conjugates with biological substrates having applications in a variety of applications including methods of analyte detection.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: January 11, 2022
    Assignee: AAT BIOQUEST, INC.
    Inventors: Zhenjun Diwu, Haitao Guo, Jixiang Liu, Qin Zhao, Ruogu Peng
  • Publication number: 20200378975
    Abstract: Styryl compounds useful for preparing biological detections probes, and the use of the Styryl compounds for the detection, discrimination and quantification of biological targets.
    Type: Application
    Filed: August 15, 2020
    Publication date: December 3, 2020
    Applicant: AAT BIOQUEST, INC.
    Inventors: Zhenjun Diwu, Zhen Luo, Jixiang Liu, Pengfei Dong
  • Publication number: 20200263084
    Abstract: Fluorescent water soluble conjugated polymers including polycyclic aromatic comonomers are provided. The conjugated polymers can be linked to an acceptor fluorescent dye. The conjugated polymers find use in conjugates with biological substrates having applications in a variety of applications including methods of analyte detection.
    Type: Application
    Filed: October 3, 2019
    Publication date: August 20, 2020
    Inventors: Zhenjun Diwu, Haitao Guo, Jixiang Liu, Qin Zhao, Ruogu Peng
  • Publication number: 20200174006
    Abstract: Styryl compounds useful for preparing biological detections probes, and the use of the Styryl compounds for the detection, discrimination and quantification of biological targets.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 4, 2020
    Inventors: Zhenjun Diwu, Zhen Luo, Jixiang Liu, Pengfei Dong