Patents Assigned to Biotium, Inc.
  • Patent number: 10976309
    Abstract: Provided herein are methods, compositions and kits for labeling of target proteins such as antibodies. The methods, compositions and kits are suited for labeling of such proteins that are mixed with other non-target molecules including BSA, gelatin, and other complex biological molecules.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: April 13, 2021
    Assignee: BIOTIUM, INC.
    Inventors: Fei Mao, Lori Michelle Roberts, Chingying Cheung
  • Patent number: 10837881
    Abstract: The present invention provides methods, compositions, and kits useful in preparing labeled molecules, which are useful in the detection of binding partners.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: November 17, 2020
    Assignee: BIOTIUM, INC.
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Hye Eun Hoover
  • Patent number: 10570463
    Abstract: In some aspects, the disclosure provides compounds comprising nucleic acid modifying moieties, such as nucleic acid binding dyes comprising activatable groups. In some aspects, the disclosure provides nucleic acid probes comprising compounds of the disclosure, and methods of making the same. In some aspects, the disclosure provides methods of using compounds of the disclosure, such as methods of labeling and/or detecting non-viable organisms or non-viable cells, and methods of detecting contamination or infection.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: February 25, 2020
    Assignee: BIOTIUM, INC.
    Inventors: Fei Mao, Patrick Gordon McGarraugh, Alexis Spain Madrid, Wai-Yee Leung, Lori M. Roberts
  • Patent number: 10107799
    Abstract: Provided herein are methods, compositions and kits for labeling of target proteins such as antibodies. The methods, compositions and kits are suited for labeling of such proteins that are mixed with other non-target molecules including BSA, gelatin, and other complex biological molecules.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: October 23, 2018
    Assignee: BIOTIUM, INC.
    Inventors: Fei Mao, Lori M. Roberts, Chingying Cheung
  • Patent number: 10053484
    Abstract: The present invention relates to fluorescent dyes in general. The present invention provides a wide range of fluorescent dyes and kits containing the same, which are applicable for labeling a variety of biomolecules, cells and microorganisms. The present invention also provides various methods of using the fluorescent dyes for research and development, forensic identification, environmental studies, diagnosis, prognosis, and/or treatment of disease conditions.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: August 21, 2018
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Hye Eun Hoover
  • Patent number: 10011570
    Abstract: The invention provides compounds, including fluorescent nucleic acid dyes, and methods for use including nucleic acid detection. Further provided are kits, instruments and systems comprising compounds of the invention or adapted for use with compounds of the invention or other nucleic acid dyes.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: July 3, 2018
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Wai-Yee Leung, Lori M. Roberts, Patrick Gordon McGarraugh
  • Patent number: 9791450
    Abstract: The present invention relates to fluorescent dyes. The present invention provides a wide range of fluorescent dyes and kits containing the same, which are applicable for labeling a variety of biomolecules, cells and microorganisms. In one aspect, the invention provides a compound having a maximal fluorescence excitation wavelength, wherein the compound has a structure of Formula II: wherein Z? is a counterion, Y is a bridge unit permitting electron delocalization between F and ?, and F is a moiety having the structure: The present invention also provides various methods of using the fluorescent dyes for research and development, forensic identification, environmental studies, diagnosis, prognosis, and/or treatment of disease conditions.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: October 17, 2017
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Hye Eun Hoover
  • Patent number: 9682970
    Abstract: The invention provides compounds, including fluorescent nucleic acid dyes, and methods for use including nucleic acid detection, nucleic acid amplification reactions, and high-resolution melt curve analysis. Further provided are kits, instruments and systems comprising compounds of the invention or adapted for use with compounds of the invention or other nucleic acid dyes.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: June 20, 2017
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Chingying Cheung, Wai-Yee Leung, Sarah Lynn Windler, Lori M. Roberts
  • Patent number: 9670363
    Abstract: The invention discloses new substituted anthraquinone dyes that may be useful as cellular stains. In some aspect of the invention, the nuclear stains are useful for staining the nuclei of dead or fixed cells. Another aspect of the invention relates to substituted anthraquinone dyes comprising an enzyme substrate moiety that is transformable or cleavable by an enzyme such that the transformation or cleavage of the substrate moiety causes a detectable change in the functionality or spectral properties of the dye.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: June 6, 2017
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Lori Michelle Roberts
  • Patent number: 9670476
    Abstract: Enzyme substrates and associated technology of the present invention are provided. An enzyme substrate of the invention may comprise a biologically functional fluorescent dye and an enzyme-specific substrate moiety attached in such a way that the functionality of the functional dye is diminished. An enzymatic reaction may cleave at least a portion of the substrate moiety from the enzyme substrate to provide a more functional product dye. This product dye may be nonfluorescent or weakly fluorescent, in general, and relatively fluorescent, in a particular condition, such as when bound to a partner biological molecule or an assembly of partner biological molecules. An enzyme substrate of the present invention may thus be useful in fluorescence detection, and/or in any of a variety of useful applications, such as the detection of enzymatic activity in a cell-free system or in a living cell, the screening of drugs, or the diagnosis of disease.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: June 6, 2017
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Hui Cen, Wai-Yee Leung
  • Patent number: 9580749
    Abstract: Dimeric and trimeric nucleic acid dyes, and associated systems and methods are provided. Such a dye may form a hairpin-like structure that enables it to stain nucleic acids via a release-on-demand mechanism, for example. Such a dye may have low background fluorescence in the absence of nucleic acids and high fluorescence in the presence of nucleic acids, upon binding therewith, for example. A dye provided herein may be useful in a variety of applications, such as in DNA quantitation in real-time PCR, for example.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: February 28, 2017
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Wai-Yee Leung, Xing Xin
  • Patent number: 9579402
    Abstract: The present invention relates to fluorescent dyes in general. The present invention provides a wide range of fluorescent dyes and kits containing the same, which are applicable for labeling a variety of biomolecules, cells and microorganisms. The present invention also provides various methods of using the fluorescent dyes for research and development, forensic identification, environmental studies, diagnosis, prognosis, and/or treatment of disease conditions.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: February 28, 2017
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Hye Eun Hoover
  • Publication number: 20160237421
    Abstract: Enzyme substrates and associated technology of the present invention are provided. An enzyme substrate of the invention may comprise a biologically functional fluorescent dye and an enzyme-specific substrate moiety attached in such a way that the functionality of the functional dye is diminished. An enzymatic reaction may cleave at least a portion of the substrate moiety from the enzyme substrate to provide a more functional product dye. This product dye may be nonfluorescent or weakly fluorescent, in general, and relatively fluorescent, in a particular condition, such as when bound to a partner biological molecule or an assembly of partner biological molecules. An enzyme substrate of the present invention may thus be useful in fluorescence detection, and/or in any of a variety of useful applications, such as the detection of enzymatic activity in a cell-free system or in a living cell, the screening of drugs, or the diagnosis of disease.
    Type: Application
    Filed: October 10, 2013
    Publication date: August 18, 2016
    Applicant: Biotium, Inc.
    Inventors: Fei Mao, Hui Cen, Wai-Yee Leung
  • Patent number: 9193746
    Abstract: Luminescent metal complexes, methods of producing and/or designing same, methods of using same, and associated technology, are disclosed herein. A luminescent metal complex may be useful for a variety of applications, such as staining, detection, and/or identification, for example, of substances, such as poly(amino acids), for example. Further by way of example, a luminescent metal complex may be useful for staining, detecting, and/or identifying poly(amino acids) that are associated with any of various environments, such as a gel or a gel matrix, such as any associated with SDS-PAGE, for example, a surface environment, such as any associated with western blot, for example, and/or the like. Compositions, solutions, and kits comprising a luminescent metal complex are also disclosed herein.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: November 24, 2015
    Assignee: BIOTIUM, INC.
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Jie Yang
  • Patent number: 9102835
    Abstract: Methods of using dyes and associated technology are provided. A dye, such as a monomeric dye or a dimeric dye, may be used in a nucleic acid gel staining application and/or a nucleic acid detection application. Such a dye and a salt that comprises an anion that is associated with a strong acid and a cation that is associated with a strong base may be used in such an application. A dimeric dye, such as a dimeric dye capable of forming a hairpin-like structure, may be used to stain and/or detect nucleic acids via a release-on-demand mechanism. A dimeric dye having low background fluorescence in the absence of nucleic acids and high fluorescence in the presence of nucleic acids, upon binding therewith, may be used to stain and/or detect nucleic acids.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: August 11, 2015
    Assignee: BIOTIUM, INC.
    Inventors: Fei Mao, Wai-Yee Leung
  • Patent number: 9097667
    Abstract: The present invention relates to fluorescent dyes. The present invention provides a wide range of fluorescent dyes and kits containing the same, which are applicable for labeling a variety of biomolecules, cells and microorganisms. In one aspect, the invention provides a compound having a maximal fluorescence excitation wavelength, wherein the compound has a structure of Formula II: F—Y=???Formula II and wherein Z— is a counterion, Y is a bridge unit permitting electron delocalization between F and ?, and F is a moiety having the structure: The present invention also provides various methods of using the fluorescent dyes for research and development, forensic identification, environmental studies, diagnosis, prognosis, and/or treatment of disease conditions.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: August 4, 2015
    Assignee: BIOTIUM, INC.
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Hye Eun Hoover
  • Patent number: 9006437
    Abstract: The present invention relates to fluorescent dyes in general. The present invention provides a wide range of fluorescent dyes and kits containing the same, which are applicable for labeling a variety of biomolecules, cells and microorganisms. The present invention also provides various methods of using the fluorescent dyes for research and development, forensic identification, environmental studies, diagnosis, prognosis, and/or treatment of disease conditions.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: April 14, 2015
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung
  • Publication number: 20150056632
    Abstract: The present invention provides methods, compositions, and kits useful in preparing labeled molecules, which are useful in the detection of binding partners.
    Type: Application
    Filed: March 18, 2014
    Publication date: February 26, 2015
    Applicant: Biotium, Inc.
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Hye Eun Hoover
  • Publication number: 20150025222
    Abstract: The invention discloses new substituted anthraquinone dyes that may be useful as cellular stains. In some aspect of the invention, the nuclear stains are useful for staining the nuclei of dead or fixed cells. Another aspect of the invention relates to substituted anthraquinone dyes comprising an enzyme substrate moiety that is transformable or cleavable by an enzyme such that the transformation or cleavage of the substrate moiety causes a detectable change in the functionality or spectral properties of the dye.
    Type: Application
    Filed: April 9, 2014
    Publication date: January 22, 2015
    Applicant: Biotium, Inc.
    Inventors: Fei MAO, Wai-Yee LEUNG, Ching-Ying CHEUNG, Lori Michelle ROBERTS
  • Patent number: 8877437
    Abstract: Methods of using dyes and associated technology are provided. A dye, such as a monomeric dye or a dimeric dye, may be used in a nucleic acid gel staining application and/or a nucleic acid detection application. A dimeric dye, such as a dimeric dye capable of forming a hairpin-like structure, may be used to stain and/or detect nucleic acids via a release-on-demand mechanism. A dimeric dye having low background fluorescence in the absence of nucleic acids and high fluorescence in the presence of nucleic acids, upon binding therewith, may be used to stain and/or detect nucleic acids. Buffers comprising a weak acid and a salt of the weak acid, such as a lithium salt, are also provided to allow for effective prestaining of nucleic acids.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: November 4, 2014
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Wai-Yee Leung, Tam Van