Patents by Inventor Hui Cen

Hui Cen 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: 20190385221
    Abstract: Systems and methods for an online donation marketplace are provided. An oiler of a non-cash item from a donor to be sold on an online open market is received. The offer includes a pricing structure and a selected charity. The item can be any of a service, a good, or an experience. The offer is displayed to potential buyers, and when buyer requests to make a purchase, the transaction is facilitated and the donated payment is provided to the selected charity. The buyer and donor receive recognition for their charitable activity. Sometimes the donor is a merchant that offers a deal in exchange for a required donation. In other embodiments, a seeker requests an item to be donated by a donor. The seeker can be a buyer, or may be simply a beneficiary of the transaction.
    Type: Application
    Filed: June 7, 2019
    Publication date: December 19, 2019
    Inventors: Hui Cen, Linjie Zhang, Licen Xu
  • 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
  • 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
  • Publication number: 20140273151
    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: September 18, 2014
    Applicant: Biotium, Inc.
    Inventors: Fei Mao, Hui Cen, Wai-Yee Leung
  • Patent number: 8778627
    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: December 14, 2011
    Date of Patent: July 15, 2014
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Hui Cen, Wai-Yee Leung
  • Patent number: 8586325
    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: May 10, 2013
    Date of Patent: November 19, 2013
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Hui Cen
  • Publication number: 20130236888
    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: May 10, 2013
    Publication date: September 12, 2013
    Applicant: Biotium, Inc.
    Inventors: Fei Mao, Hui Cen
  • Publication number: 20120115129
    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: December 14, 2011
    Publication date: May 10, 2012
    Applicant: BIOTIUM, INC.
    Inventors: FEI MAO, HUI CEN, WAI-YEE LEUNG
  • Patent number: 8092784
    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: November 21, 2006
    Date of Patent: January 10, 2012
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Hui Cen, Wai-yee Leung
  • Patent number: 7705117
    Abstract: This invention relates to mouse and human EGFH2, and to variants thereof and to polynucleotides encoding EGFH2. This invention also relates to therapeutic agents related to the polynucleotides and proteins.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: April 27, 2010
    Assignee: Chiron Corporation
    Inventors: W. Michael Kavanaugh, Hui Cen, Pauline Lee
  • Publication number: 20100062461
    Abstract: The present invention provides an antibody-based multiplex detection method for identifying one or more epitopes in one or more samples, the method comprising the steps of: (a) contacting each of the samples comprising the epitopes with one or more antibodies specific to the epitopes to be detected; (b) washing unbound antibodies away and eluting bound antibodies from the epitope carriers to provide separate antibody eluates; and (c) detecting and quantifying antibodies in the antibody eluates to generate separate profiles of antibodies for each of the samples. The epitopes to be detected can be located intracellularly, or present on the surface of cells or an artificial surface. In general, the epitopes are derived from protein, polypeptides with or without post-translational modification, carbohydrate, nucleic acid, or lipid.
    Type: Application
    Filed: November 13, 2009
    Publication date: March 11, 2010
    Applicant: LEAP BIOSCIENCES CORPORATION
    Inventor: Hui CEN
  • Publication number: 20090148386
    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: November 21, 2006
    Publication date: June 11, 2009
    Inventors: Fei Mao, Hui Cen, Wai-yee Leung
  • Publication number: 20090081701
    Abstract: The present invention provides methods of selective enrichment of ligands present in a biological sample. One or a plurality of receptor carriers are used to capture ligands capable of binding to receptors immobilized on the surface of the receptor carriers. Receptor carriers bound with the ligands are separated from the remaining sample and the ligands are then eluted with a ligand elution solution to result in an enriched ligand sample. The enriched ligand sample may be used for further isolation of one or more ligands of interest, or for ligand profiling using 2-D gel electrophoresis coupled with mass spectrometry, for example. Such ligand profiling may have a number of applications, such as disease diagnosis, pathogen detection and drug screening.
    Type: Application
    Filed: November 26, 2008
    Publication date: March 26, 2009
    Inventor: Hui Cen
  • Publication number: 20080004428
    Abstract: This invention relates to mouse and human EGFH2, and to variants thereof and to polynucleotides encoding EGFH2. This invention also relates to therapeutic agents related to the polynucleotides and proteins.
    Type: Application
    Filed: January 22, 2007
    Publication date: January 3, 2008
    Inventors: W. Kavanaugh, Hui Cen, Pauline Lee
  • Patent number: 7276587
    Abstract: This invention relates to mouse and human EGFH2, and to variants thereof and to polynucleotides encoding EGFH2. This invention also relates to therapeutic agents related to the polynucleotides and proteins.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: October 2, 2007
    Assignee: Chiron Corporation
    Inventors: W. Michael Kavanaugh, Hui Cen, Pauline Lee
  • Publication number: 20070161063
    Abstract: The invention is to methods for screening women for breast cancer and precancer by determining a level of an estrogen-related marker. The invention further provides methods of treating such patients identified as having one or more abnormal ductal epithelial cells and an estrogen-related marker. The invention provides methods for screening patient for hormone replacement therapy (HRT), and of monitoring such patients once they begin HRT. The invention provides methods of treating peri-, menopausal or postmenopausal women for both cancer risk reduction and menopausal symptoms (or other conditions related to lowered systemic estrogen levels). The invention also provides kits for the screening, monitoring, and treating methods described.
    Type: Application
    Filed: March 2, 2007
    Publication date: July 12, 2007
    Inventors: Susan Love, David Hung, Hui Cen
  • Publication number: 20070003950
    Abstract: This invention relates generally to the field of target detection. In particular, the present inventions provides for methods and compositions for assaying a plurality of different non-nucleic acid targets or for assaying activities of a plurality of enzymes using, inter alia, oligonucleotide identification (ID) tags.
    Type: Application
    Filed: March 17, 2006
    Publication date: January 4, 2007
    Applicant: Superarray Bioscience Corporation
    Inventors: Li Shen, Xiang Yu, Hui Cen
  • Publication number: 20050202006
    Abstract: This invention relates to mouse and human EGFH2, and to variants thereof and to polynucleotides encoding EGFH2. This invention also relates to therapeutic agents related to the polynucleotides and proteins.
    Type: Application
    Filed: August 31, 2004
    Publication date: September 15, 2005
    Inventors: W. Kavanaugh, Hui Cen, Pauline Lee
  • Publication number: 20050095600
    Abstract: This invention provides gene-specific probe labeling methods for nucleic acid array detection. In the subject invention, a set of a representational number of distinct gene specific primers is used to generate a sub-population of labeled nucleic acids from each of the different physiological samples. The labeled nucleic acids are then compared to each other by hybridizing to a specially designed nucleic acid array that contains the representational number of distinct genes. The subject methods find use in identifying the expression pattern of the genes of special interest in the physiological samples.
    Type: Application
    Filed: October 31, 2003
    Publication date: May 5, 2005
    Inventors: Xiang Yu, Li Shen, Xiao Zeng, Ying Han, Kun Lu, Hui Cen
  • Patent number: 6825333
    Abstract: This invention relates to mouse and human EGFH2, and to variants thereof and to polynucleotides encoding EGFH2. This invention also relates to therapeutic agents related to the polynucleotides and proteins.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: November 30, 2004
    Assignee: Chiron Corporation
    Inventors: W. Michael Kavanaugh, Hui Cen, Pauline Lee