Patents by Inventor Nara Narayanan

Nara Narayanan 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: 20230159762
    Abstract: This disclosure provides a family of compounds that absorb and fluoresce in the short wave infrared region (SWIR, optionally 1000 nm to 1300 nm), including hydrophilic compounds that exhibit absorption and emission spectral profiles in aqueous solutions substantially similar to those observed in organic solvents such as methanol or DMSO. The compounds can be chemically linked to biomolecules including proteins, nucleic acids, and therapeutic small molecules. The compounds are useful for imaging in a variety of medical, biological and diagnostic applications, including SWIR in vivo imaging of regions of interest within a mammal.
    Type: Application
    Filed: December 7, 2022
    Publication date: May 25, 2023
    Inventors: Nara Narayanan, Kevin Groves, Guojie Ho
  • Patent number: 11549017
    Abstract: This disclosure provides a family of compounds that absorb and fluoresce in the short wave infrared region (SWIR, optionally 1000 nm to 1300 nm), including hydrophilic compounds that exhibit absorption and emission spectral profiles in aqueous solutions substantially similar to those observed in organic solvents such as methanol or DMSO. The compounds can be chemically linked to biomolecules including proteins, nucleic acids, and therapeutic small molecules. The compounds are useful for imaging in a variety of medical, biological and diagnostic applications, including SWIR in vivo imaging of regions of interest within a mammal.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: January 10, 2023
    Assignee: PerkinElmer Health Sciences, Inc.
    Inventors: Nara Narayanan, Kevin Groves, Guojie Ho
  • Publication number: 20190100654
    Abstract: This disclosure provides a family of compounds that absorb and fluoresce in the short wave infrared region (SWIR, optionally 1000 nm to 1300 nm), including hydrophilic compounds that exhibit absorption and emission spectral profiles in aqueous solutions substantially similar to those observed in organic solvents such as methanol or DMSO. The compounds can be chemically linked to biomolecules including proteins, nucleic acids, and therapeutic small molecules. The compounds are useful for imaging in a variety of medical, biological and diagnostic applications, including SWIR in vivo imaging of regions of interest within a mammal.
    Type: Application
    Filed: September 7, 2018
    Publication date: April 4, 2019
    Inventors: Nara Narayanan, Kevin Groves, Guojie Ho
  • Patent number: 9365721
    Abstract: The invention relates to a family of fluorescent compounds that comprise a bridged polycyclo moiety. The compounds can be chemically linked to biomolecules, such as proteins, nucleic acids, and therapeutic small molecules. The compounds can be used for imaging in a variety of medical, biological and diagnostic applications, and are particularly useful for the in vivo imaging of regions of interest within a mammal.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: June 14, 2016
    Assignee: VISEN MEDICAL, INC.
    Inventor: Nara Narayanan
  • Publication number: 20130137873
    Abstract: The invention relates to a family of fluorescent compounds that comprise a bridged polycyclo moiety. The compounds can be chemically linked to biomolecules, such as proteins, nucleic acids, and therapeutic small molecules. The compounds can be used for imaging in a variety of medical, biological and diagnostic applications, and are particularly useful for the in vivo imaging of regions of interest within a mammal.
    Type: Application
    Filed: July 13, 2012
    Publication date: May 30, 2013
    Inventor: Nara Narayanan
  • Patent number: 8148516
    Abstract: The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charge-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation without interference from unincorporated NPs and without illuminating the polymerase-DNA complex.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: April 3, 2012
    Assignee: Pacific Biosciences of California, Inc.
    Inventors: John G. K. Williams, Gregory R Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff
  • Publication number: 20110039266
    Abstract: The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charge-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation without interference from unincorporated NPs and without illuminating the polymerase-DNA complex.
    Type: Application
    Filed: August 10, 2010
    Publication date: February 17, 2011
    Applicant: Pacific Biosciences of California, Inc.
    Inventors: John G.K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff
  • Patent number: 7659070
    Abstract: The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charge-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation without interference from unincorporated NPs and without illuminating the polymerase-DNA complex.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: February 9, 2010
    Assignee: Pacific Biosciences of California, Inc.
    Inventors: John G. K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff
  • Patent number: 7625701
    Abstract: The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charged-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation without interference from unincorporated NPs and without illuminating the polymerase-DNA complex.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: December 1, 2009
    Assignee: Pacific Biosciences of California, Inc.
    Inventors: John G. K. Williams, Gregory Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi Reynolds, Pamela Sheaff
  • Publication number: 20080286207
    Abstract: The invention relates to a family of fluorescent compounds that comprise a bridged polycyclo moiety. The compounds can be chemically linked to biomolecules, such as proteins, nucleic acids, and therapeutic small molecules. The compounds can be used for imaging in a variety of medical, biological and diagnostic applications, and are particularly useful for the in vivo imaging of regions of interest within a mammal.
    Type: Application
    Filed: February 8, 2008
    Publication date: November 20, 2008
    Inventor: Nara Narayanan
  • Publication number: 20080267883
    Abstract: This invention relates to new fluorescent chemical entities, including fluorescent molecules that comprise a carboxyl or carbonyl functionalized pyridine moiety. This invention also relates to the corresponding reactive versions of such molecules. This invention also relates to the corresponding conjugates with moieties such as peptides, proteins, various biomolecules, carbocyclic and heterocyclic compounds, sugars, and their uses thereof.
    Type: Application
    Filed: September 1, 2006
    Publication date: October 30, 2008
    Inventors: Milind Rajopadhye, Nara Narayanan, Jeffrey D. Peterson
  • Publication number: 20080206764
    Abstract: The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charge-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation without interference from unincorporated NPs and without illuminating the polymerase-DNA complex.
    Type: Application
    Filed: October 26, 2007
    Publication date: August 28, 2008
    Applicant: Pacific Biosciences
    Inventors: John G.K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff
  • Publication number: 20080153095
    Abstract: The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charge-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation without interference from unincorporated NPs and without illuminating the polymerase-DNA complex.
    Type: Application
    Filed: October 26, 2007
    Publication date: June 26, 2008
    Applicant: Pacific Biosciences
    Inventors: John G.K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff
  • Publication number: 20060063173
    Abstract: The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charge-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation without interference from unincorporated NPs and without illuminating the polymerase-DNA complex.
    Type: Application
    Filed: June 15, 2005
    Publication date: March 23, 2006
    Applicant: LI-COR, Inc.
    Inventors: John Williams, Gregory Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi Reynolds, Pamela Sheaff
  • Patent number: 6936702
    Abstract: The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charge-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation without interference from unincorporated NPs and without illuminating the polymerase-DNA complex.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: August 30, 2005
    Assignee: LI-COR, Inc.
    Inventors: John G. K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff
  • Publication number: 20020042071
    Abstract: The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charge-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation without interference from unincorporated NPs and without illuminating the polymerase-DNA complex.
    Type: Application
    Filed: June 6, 2001
    Publication date: April 11, 2002
    Inventors: John G.K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff