Patents by Inventor Zaiguo Li

Zaiguo Li 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: 11939350
    Abstract: Provided are methods for labeling target molecules, such as nucleic acids, with fluorescent dye compounds having the formula One method embodiment includes contacting reactive group Z of the fluorescent dye compound with the target molecule such that reactive group Z reacts with the target molecule to form a covalent bond between the group and the target molecule. Another method embodiment includes contacting a fluorescent dye compound that further includes a first member of a binding pair, with a target molecule that includes a second member of the binding pair. Also provided are target molecules labeled with the fluorescent dye compounds.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: March 26, 2024
    Assignee: Enzo Life Sciences, Inc.
    Inventors: Zaiguo Li, Praveen Pande
  • Publication number: 20210079034
    Abstract: Provided are methods for labeling target molecules, such as nucleic acids, with fluorescent dye compounds having the formula One method embodiment includes contacting reactive group Z of the fluorescent dye compound with the target molecule such that reactive group Z reacts with the target molecule to form a covalent bond between the group and the target molecule. Another method embodiment includes contacting a fluorescent dye compound that further includes a first member of a binding pair, with a target molecule that includes a second member of the binding pair. Also provided are target molecules labeled with the fluorescent dye compounds.
    Type: Application
    Filed: November 19, 2020
    Publication date: March 18, 2021
    Applicant: Enzo Life Sciences, Inc.
    Inventors: Zaiguo Li, Praveen Pande
  • Publication number: 20210079225
    Abstract: The present disclosure provides reactive quencher dyes that can be used in the detection and/or quantification of desirable target molecules, such as proteins, nucleic acids and various cellular organelles. These dyes are essentially non-fluorescent but are efficient quenchers of various fluorescent dyes. Also, provided are methods of using the dyes, bio-probes incorporating dyes and methods of using the bio-probes. The quencher dyes described herein are modified to provide beneficial properties.
    Type: Application
    Filed: November 2, 2020
    Publication date: March 18, 2021
    Applicant: Enzo Biochem, Inc.
    Inventors: Zaiguo Li, Praveen Pande, Natarajan Raju
  • Patent number: 10875886
    Abstract: Provided are methods for labeling target molecules, such as nucleic acids, with fluorescent dye compounds having the formula One method embodiment includes contacting reactive group Z of the fluorescent dye compound with the target molecule such that reactive group Z reacts with the target molecule to form a covalent bond between the group and the target molecule. Another method embodiment includes contacting a fluorescent dye compound that further includes a first member of a binding pair, with a target molecule that includes a second member of the binding pair. Also provided are target molecules labeled with the fluorescent dye compounds.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: December 29, 2020
    Assignee: Enzo Life Sciences, Inc.
    Inventors: Zaiguo Li, Praveen Pande
  • Patent number: 10865309
    Abstract: The present disclosure provides reactive quencher dyes that can be used in the detection and/or quantification of desirable target molecules, such as proteins, nucleic acids and various cellular organelles. These dyes are essentially non-fluorescent but are efficient quenchers of various fluorescent dyes. Also, provided are methods of using the dyes, bio-probes incorporating dyes and methods of using the bio-probes. The quencher dyes described herein are modified to provide beneficial properties.
    Type: Grant
    Filed: October 6, 2018
    Date of Patent: December 15, 2020
    Assignee: Enzo Biochem, Inc.
    Inventors: Zaiguo Li, Praveen Pande, Natarajan Raju
  • Patent number: 10683257
    Abstract: The invention provides methods for synthesizing the compound (2R,3S,4E)-N-methyl-5-(4?-pentylphenyl)-2-aminopent-4-ene-1,3-diol, also known as SK1-I, and intermediate compounds used in its synthesis.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: June 16, 2020
    Assignee: Enzo Biochem, Inc.
    Inventors: Zaiguo Li, Natarajan Raju, Praveen Pande
  • Publication number: 20200131113
    Abstract: The invention provides methods for synthesizing the compound (2R,3S,4E)-N-methyl-5-(4?-pentylphenyl)-2-aminopent-4-ene-1,3-diol, also known as SK1-I, and intermediate compounds used in its synthesis.
    Type: Application
    Filed: May 13, 2019
    Publication date: April 30, 2020
    Applicant: Enzo Biochem, Inc.
    Inventors: Zaiguo Li, Natarajan Raju, Praveen Pande
  • Publication number: 20190256453
    Abstract: The invention provides methods for synthesizing the compound (2R,3S,4E)-N-methyl-5-(4?-pentylphenyl)-2-aminopent-4-ene-1,3-diol, also known as SK1-I, and intermediate compounds used in its synthesis.
    Type: Application
    Filed: October 24, 2018
    Publication date: August 22, 2019
    Applicant: Enzo Biochem, Inc.
    Inventors: Zaiguo Li, Natarajan Raju, Praveen Pande
  • Patent number: 10364211
    Abstract: The invention provides methods for synthesizing the compound (2R,3S,4E)-N-methyl-5-(4?-pentylphenyl)-2-aminopent-4-ene-1,3-diol, also known as SK1-I, and intermediate compounds used in its synthesis.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: July 30, 2019
    Assignee: Enzo Biochem, Inc.
    Inventors: Zaiguo Li, Natarajan Raju, Praveen Pande
  • Publication number: 20190062560
    Abstract: The present disclosure provides reactive quencher dyes that can be used in the detection and/or quantification of desirable target molecules, such as proteins, nucleic acids and various cellular organelles. These dyes are essentially non-fluorescent but are efficient quenchers of various fluorescent dyes. Also, provided are methods of using the dyes, bio-probes incorporating dyes and methods of using the bio-probes. The quencher dyes described herein are modified to provide beneficial properties.
    Type: Application
    Filed: October 6, 2018
    Publication date: February 28, 2019
    Applicant: Enzo Biochem, Inc.
    Inventors: Zaiguo Li, Praveen Pande, Natarajan Raju
  • Publication number: 20190002491
    Abstract: Provided are methods for labeling target molecules, such as nucleic acids, with fluorescent dye compounds having the formula One method embodiment includes contacting reactive group Z of the fluorescent dye compound with the target molecule such that reactive group Z reacts with the target molecule to form a covalent bond between the group and the target molecule. Another method embodiment includes contacting a fluorescent dye compound that further includes a first member of a binding pair, with a target molecule that includes a second member of the binding pair. Also provided are target molecules labeled with the fluorescent dye compounds.
    Type: Application
    Filed: September 11, 2018
    Publication date: January 3, 2019
    Applicant: ENZO LIFE SCIENCES, INC. C/O ENZO BIOCHEM, INC.
    Inventors: Zaiguo Li, Praveen Pande
  • Patent number: 10131789
    Abstract: The present disclosure provides reactive quencher dyes that can be used in the detection and/or quantification of desirable target molecules, such as proteins, nucleic acids and various cellular organelles. These dyes are essentially non-fluorescent but are efficient quenchers of various fluorescent dyes. Also, provided are methods of using the dyes, bio-probes incorporating dyes and methods of using the bio-probes. The quencher dyes described herein are modified to provide beneficial properties.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: November 20, 2018
    Assignee: Enzo Biochem, Inc.
    Inventors: Zaiguo Li, Praveen Pande, Natarajan Raju
  • Patent number: 10106573
    Abstract: Provided are methods for labeling target molecules, such as nucleic acids, with fluorescent dye compounds having the formula One method embodiment includes contacting reactive group Z of the fluorescent dye compound with the target molecule such that reactive group Z reacts with the target molecule to form a covalent bond between the group and the target molecule. Another method embodiment includes contacting a fluorescent dye compound that further includes a first member of a binding pair, with a target molecule that includes a second member of the binding pair. Also provided are target molecules labeled with the fluorescent dye compounds.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: October 23, 2018
    Assignee: Enzo Life Sciences, Inc.
    Inventors: Zaiguo Li, Praveen Pande
  • Publication number: 20180215920
    Abstract: The present disclosure provides reactive quencher dyes that can be used in the detection and/or quantification of desirable target molecules, such as proteins, nucleic acids and various cellular organelles. These dyes are essentially non-fluorescent but are efficient quenchers of various fluorescent dyes. Also, provided are methods of using the dyes, bio-probes incorporating dyes and methods of using the bio-probes. The quencher dyes described herein are modified to provide beneficial properties.
    Type: Application
    Filed: March 22, 2018
    Publication date: August 2, 2018
    Applicant: ENZO BIOCHEM, INC.
    Inventors: ZAIGUO LI, PRAVEEN PANDE, NATARAJAN RAJU
  • Patent number: 9957393
    Abstract: The present disclosure provides reactive quencher dyes that can be used in the detection and/or quantification of desirable target molecules, such as proteins, nucleic acids and various cellular organelles. These dyes are essentially non-fluorescent but are efficient quenchers of various fluorescent dyes. Also, provided are methods of using the dyes, bio-probes incorporating dyes and methods of using the bio-probes. The quencher dyes described herein are modified to provide beneficial properties.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: May 1, 2018
    Assignee: Enzo Biochem, Inc.
    Inventors: Zaiguo Li, Praveen Pande, Natarajan Raju
  • Patent number: 9951227
    Abstract: The present disclosure provides reactive quencher dyes that can be used in the detection and/or quantification of desirable target molecules, such as proteins, nucleic acids and various cellular organelles. These dyes are essentially non-fluorescent but are efficient quenchers of various fluorescent dyes. Also, provided are methods of using the dyes, bio-probes incorporating dyes and methods of using the bio-probes. The quencher dyes described herein are modified to provide beneficial properties.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: April 24, 2018
    Assignee: Enzo Biochem, Inc.
    Inventors: Zaiguo Li, Praveen Pande, Natarajan Raju
  • Publication number: 20170369954
    Abstract: The present disclosure provides reactive quencher dyes that can be used in the detection and/or quantification of desirable target molecules, such as proteins, nucleic acids and various cellular organelles. These dyes are essentially non-fluorescent but are efficient quenchers of various fluorescent dyes. Also, provided are methods of using the dyes, bio-probes incorporating dyes and methods of using the bio-probes. The quencher dyes described herein are modified to provide beneficial properties.
    Type: Application
    Filed: September 7, 2017
    Publication date: December 28, 2017
    Applicant: Enzo Biochem, Inc.
    Inventors: Zaiguo Li, Praveen Pande, Natarajan Raju
  • Publication number: 20160311846
    Abstract: Provided are methods for labeling target molecules, such as nucleic acids, with fluorescent dye compounds having the formula One method embodiment includes contacting reactive group Z of the fluorescent dye compound with the target molecule such that reactive group Z reacts with the target molecule to form a covalent bond between the group and the target molecule. Another method embodiment includes contacting a fluorescent dye compound that further includes a first member of a binding pair, with a target molecule that includes a second member of the binding pair. Also provided are target molecules labeled with the fluorescent dye compounds.
    Type: Application
    Filed: July 8, 2016
    Publication date: October 27, 2016
    Applicant: ENZO LIFE SCIENCES, INC. C/O ENZO BIOCHEM, INC.
    Inventors: Zaiguo Li, Praveen Pande
  • Publication number: 20160289779
    Abstract: The present disclosure provides reactive quencher dyes that can be used in the detection and/or quantification of desirable target molecules, such as proteins, nucleic acids and various cellular organelles. These dyes are essentially non-fluorescent but are efficient quenchers of various fluorescent dyes. Also, provided are methods of using the dyes, bio-probes incorporating dyes and methods of using the bio-probes. The quencher dyes described herein are modified to provide beneficial properties.
    Type: Application
    Filed: March 30, 2015
    Publication date: October 6, 2016
    Applicant: Enzo Biochem, Inc.
    Inventors: ZAIGUO LI, PRAVEEN PANDE, NATARAJAN RAJU
  • Patent number: 9416153
    Abstract: Provided are various compounds comprising the formula Also provided are fluorescent dyes comprising the above compound. Additionally, a fluorescence energy transfer system is provided that comprises the above-described fluorescent dye and a second dye, wherein the second dye is capable of energy transfer with the fluorescent dye. Further provided is a kit for labeling a target molecule, where the kit comprises the above-described fluorescent dye with additional reagents useful for labeling the target molecule. Additionally provided is a target molecule labeled with the above-described fluorescent dye. Methods of labeling a target molecule with the above-described fluorescent dye are also provided.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: August 16, 2016
    Assignee: Enzo Life Sciences, Inc.
    Inventors: Zaiguo Li, Praveen Pande