Patents by Inventor Ching-Ying Cheung

Ching-Ying Cheung 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: 20210102873
    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: October 9, 2020
    Publication date: April 8, 2021
    Inventors: Fei MAO, Wai-Yee LEUNG, Ching-Ying CHEUNG, Hye Eun HOOVER
  • 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: 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: 10005908
    Abstract: Cyanine dye compounds having a substituted methine moiety that are nucleic acid stains, particularly for fluorescent staining of RNA, including compounds having the formula where R1 is a C1-C6 alkyl, sulfoalkyl, carboxyalkyl or C1-C6 alkoxy; each R2 is independently selected from the group consisting of H, C1-C6 alkyl, C1-C6 alkoxy, fused benzo, trifluoromethyl, amino, sulfo, carboxy and halogen, that is optionally further substituted; at least one of R3, R4, and R5 is an alkyl, aryl, heteroaryl, cyclic, or heterocyclic moiety that is optionally substituted by alkyl, amino, aminoalkyl, carboxy, nitro, or halogen; and the remaining R3, R4 or R5 are hydrogen; X is S, O, or Se; and D is a substituted or unsubstituted pyridinium, quinolinium or benzazolium moiety.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: June 26, 2018
    Assignee: LIFE TECHNOLOGIES CORPORATION
    Inventors: Jason Dallwig, David Hagen, Ching-Ying Cheung, Gerald Thomas, Stephen Yue
  • Publication number: 20180156810
    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: Application
    Filed: July 26, 2017
    Publication date: June 7, 2018
    Inventors: Fei MAO, Wai-Yee LEUNG, Ching-Ying CHEUNG, Hye Eun HOOVER
  • Publication number: 20180143113
    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: November 16, 2017
    Publication date: May 24, 2018
    Inventors: Fei MAO, Wai-Yee LEUNG, Ching-Ying CHEUNG, Hye Eun HOOVER
  • 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
  • Publication number: 20170247402
    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: Application
    Filed: December 12, 2016
    Publication date: August 31, 2017
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Hye Eun Hoover
  • 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: 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: 20160356681
    Abstract: Chemically reactive carbocyanine dyes incorporating an indolium ring moiety that is substituted at the 3-position by a reactive group or by a conjugated substance, and their uses, are described. Conjugation through this position results in spectral properties that are uniformly superior to those of conjugates of spectrally similar dyes wherein attachment is at a different position. The invention includes derivative compounds having one or more benzo nitrogens.
    Type: Application
    Filed: August 16, 2016
    Publication date: December 8, 2016
    Inventors: Wai-Yee LEUNG, Ching-Ying CHEUNG, Stephen YUE
  • Publication number: 20160304719
    Abstract: Cyanine dye compounds having a substituted methine moiety that are nucleic acid stains, particularly for fluorescent staining of RNA, including compounds having the formula where R1 is a C1-C6 alkyl, sulfoalkyl, carboxyalkyl or C1-C6 alkoxy; each R2 is independently selected from the group consisting of H, C1-C6 alkyl, C1-C6 alkoxy, fused benzo, trifluoromethyl, amino, sulfo, carboxy and halogen, that is optionally further substituted; at least one of R3, R4, and R5 is an alkyl, aryl, heteroaryl, cyclic, or heterocyclic moiety that is optionally substituted by alkyl, amino, aminoalkyl, carboxy, nitro, or halogen; and the remaining R3, R4 or R5 are hydrogen; X is S, O, or Se; and D is a substituted or unsubstituted pyridinium, quinolinium or benzazolium moiety.
    Type: Application
    Filed: June 28, 2016
    Publication date: October 20, 2016
    Inventors: Jason DALLWIG, David HAGEN, Ching-Ying CHEUNG, Gerald THOMAS, Stephen YUE
  • Patent number: 9423323
    Abstract: Chemically reactive carbocyanine dyes incorporating an indolium ring moiety that is substituted at the 3-position by a reactive group or by a conjugated substance, and their uses, are described. Conjugation through this position results in spectral properties that are uniformly superior to those of conjugates of spectrally similar dyes wherein attachment is at a different position. The invention includes derivative compounds having one or more benzo nitrogens.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: August 23, 2016
    Assignee: Life Technologies Corporation
    Inventors: Wai-Yee Leung, Ching-Ying Cheung, Stephen Yue
  • Patent number: 9403985
    Abstract: Cyanine dye compounds having a substituted methine moiety that are nucleic acid stains, particularly for fluorescent staining of RNA, including compounds having the formula where R1 is a C1-C6 alkyl, sulfoalkyl, carboxyalkyl or C1-C6 alkoxy; each R2 is independently selected from the group consisting of H, C1-C6 alkyl, C1-C6 alkoxy, fused benzo, trifluoromethyl, amino, sulfo, carboxy and halogen, that is optionally further substituted; at least one of R3, R4, and R5 is an alkyl, aryl, heteroaryl, cyclic, or heterocyclic moiety that is optionally substituted by alkyl, amino, aminoalkyl, carboxy, nitro, or halogen; and the remaining R3, R4 or R5 are hydrogen; X is S, O, or Se; and D is a substituted or unsubstituted pyridinium, quinolinium or benzazolium moiety.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: August 2, 2016
    Assignee: Life Technologies Corporation
    Inventors: Jason Dallwig, David Hagen, Ching-Ying Cheung, Gerald Thomas, Stephen Yue
  • Patent number: 9366676
    Abstract: Chemical compounds having a high selectivity for double stranded DNA over RNA and single stranded DNA are disclosed. The chemical compounds are stains that become fluorescent upon illumination and interaction with double stranded DNA, but exhibit reduced or no fluorescence in the absence of double stranded DNA. The compounds can be used in a variety of biological applications to qualitatively or quantitatively assay DNA, even in the presence of RNA.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: June 14, 2016
    Assignee: Life Technologies Corporation
    Inventors: Jolene Bradford, Ching-Ying Cheung, Shih-Jung Huang, Patrick Pinson, Stephen Yue
  • Publication number: 20160033520
    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: Application
    Filed: June 8, 2015
    Publication date: February 4, 2016
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Hye Eun Hoover
  • 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
  • Publication number: 20150316558
    Abstract: Chemical compounds having a high selectivity for double stranded DNA over RNA and single stranded DNA are disclosed. The chemical compounds are stains that become fluorescent upon illumination and interaction with double stranded DNA, but exhibit reduced or no fluorescence in the absence of double stranded DNA. The compounds can be used in a variety of biological applications to qualitatively or quantitatively assay DNA, even in the presence of RNA.
    Type: Application
    Filed: July 13, 2015
    Publication date: November 5, 2015
    Inventors: Jolene BRADFORD, Ching-Ying CHEUNG, Shih-Jung HUANG, Patrick PINSON, Stephen YUE
  • Patent number: 9150922
    Abstract: The present invention provides methods and non-fluorescent carbocyanine quencher compounds having the general formula: Wherein the A moiety is a substituted pyridinium, unsubstituted pyridinium, substituted quinolinium, unsubstituted quinolinium, substituted benzazolium, unsubstituted benzazolium, substituted indolinium, or substituted indolinium. The invention further provides luminescent donor molecule-quencher pairs and luminescent donor molecule-quencher-luminescent acceptor molecule conjugates wherein the quencher is a cyanine compound of the present invention. The energy transfer pairs are used to detect an analyte of interest in a sample.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: October 6, 2015
    Assignee: Life Technologies Corporation
    Inventors: Rosaria Haugland, Ching-Ying Cheung, Stephen Yue
  • Publication number: 20150247785
    Abstract: Chemically reactive carbocyanine dyes incorporating an indolium ring moiety that is substituted at the 3-position by a reactive group or by a conjugated substance, and their uses, are described. Conjugation through this position results in spectral properties that are uniformly superior to those of conjugates of spectrally similar dyes wherein attachment is at a different position. The invention includes derivative compounds having one or more benzo nitrogens.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 3, 2015
    Inventors: Wai-Yee LEUNG, Ching-Ying CHEUNG, Stephen YUE