Patents by Inventor David J. Yang

David J. Yang 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: 20230226230
    Abstract: A compound for measurement of thiopurine pathway directed systems imaging and therapy including a chelator and a thiopurine ligand is provided. A method of synthesizing the compound is also provided, and the compound may be further prepared in pharmaceutical formulations or kits for therapy or molecular imaging.
    Type: Application
    Filed: February 26, 2021
    Publication date: July 20, 2023
    Applicant: SEECURE TAIWAN CO., LTD.
    Inventors: Wei-Chung CHANG, David J. YANG, Min-Ching CHUNG, Chi-Shiang KE, Tsung-Tien KUO
  • Patent number: 11090395
    Abstract: A composition for cross talk between estrogen receptors and cannabinoid receptors including a chelator and a receptor ligand is provided. A method of synthesizing the composition is also provided, and the composition may be further prepared in pharmaceutical formulations or kits for therapy or molecular imaging.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: August 17, 2021
    Assignee: SeeCure Taiwan Co., Ltd.
    Inventors: Tsung-Tien Kuo, David J. Yang, Wei-Chung Chang, Min-Ching Chung, Chi-Shiang Ke
  • Publication number: 20210196655
    Abstract: A composition for cross talk between estrogen receptors and cannabinoid receptors including a chelator and a receptor ligand is provided. A method of synthesizing the composition is also provided, and the composition may be further prepared in pharmaceutical formulations or kits for therapy or molecular imaging.
    Type: Application
    Filed: March 4, 2021
    Publication date: July 1, 2021
    Applicant: SeeCure Taiwan Co., Ltd.
    Inventors: Tsung-Tien Kuo, David J. Yang, Wei-Chung Chang, Min-Ching Chung, Chi-Shiang Ke
  • Patent number: 10925977
    Abstract: Novel methods of synthesis of chelator-targeting ligand conjugates, compositions comprising such conjugates, and therapeutic and diagnostic applications of such conjugates are disclosed. The compositions include chelator-targeting ligand conjugates optionally chelated to one or more metal ions. Methods of synthesizing these compositions in high purity are also presented. Also disclosed are methods of imaging, treating and diagnosing disease in a subject using these novel compositions, such as methods of imaging a tumor within a subject and methods of diagnosing myocardial ischemia.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: February 23, 2021
    Assignees: Ceil>Point, LLC, The Board of Regents of the University of Texas System
    Inventors: David J. Yang, Dongfang Yu, Andrew S. Thompson
  • Patent number: 10814013
    Abstract: Novel methods of synthesis of chelator-targeting ligand conjugates, compositions comprising such conjugates, and therapeutic and diagnostic applications of such conjugates are disclosed. The compositions include chelator-targeting ligand conjugates optionally chelated to one or more metal ions. Methods of synthesizing these compositions in high purity are also presented. Also disclosed are methods of imaging, treating and diagnosing disease in a subject using these novel compositions, such as methods of imaging a tumor within a subject and methods of diagnosing myocardial ischemia.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: October 27, 2020
    Assignees: The Board of Regents of the University of Texas System, Cell>Point, LLC
    Inventors: David J. Yang, Dongfang Yu, Andrew S. Thompson, F. David Rollo
  • Publication number: 20200085978
    Abstract: A composition for cross talk between estrogen receptors and cannabinoid receptors including a chelator and a receptor ligand is provided. A method of synthesizing the composition is also provided, and the composition may be further prepared in pharmaceutical formulations or kits for therapy or molecular imaging.
    Type: Application
    Filed: September 14, 2018
    Publication date: March 19, 2020
    Applicant: SeeCure Taiwan Co., Ltd.
    Inventors: Tsung-Tien Kuo, David J. Yang, Wei-Chung Chang, Min-Ching Chung, Chi-Shiang Ke
  • Publication number: 20180296707
    Abstract: A pharmaceutical formulation including a chelator-somatostatin receptor ligand and a transchelator is provided. The chelator-somatostatin receptor ligand is conjugated with a metal source or a radionuclide source, whereas the transchelator is capable of capturing free metal source or radionuclide source that is not conjugated to the chelator-somatostatin receptor ligand. By using such pharmaceutical formulation, the preparation of radiolabeled somatostatin analogues could be made more efficient, and is feasible for imaging of SSTR pathway-activated systems in cancers and neurological diseases.
    Type: Application
    Filed: April 12, 2017
    Publication date: October 18, 2018
    Applicant: SeeCure Taiwan Co., Ltd.
    Inventors: Ning Tsao, Tsung-Tien Kuo, David J. Yang
  • Patent number: 9820986
    Abstract: The invention include glycopeptides having a glycoside and a peptide covalently bound through an amide bond. The glycopeptides may also include a diagnostic or therapeutic agent bound to the glycopeptide. A metal, such as a radionuclide, may also be chelated to the glycopeptide. Specific embodiments of the invention relate to glycopeptides made of chitosan covalently bound to a poly(amino acid) such as poly(glutamic acid) or poly(aspartic acid). Diagnostic agents conjugated to the glycopeptide may facilitate imaging. Specific therapeutic agents that may be conjugated to the glycopeptide include anticancer drugs, rheumatoid arthritis drugs, anticoagulants, anti-angiogenesis drugs, apoptosis drugs, osteoporosis drugs, steroids, and anti-inflammatory drugs. Some agents, such as radionuclides, may have both diagnostic and therapeutic effects.
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: November 21, 2017
    Assignees: TAIWAN HOPAZ CHEMS, MFG. CO., LTD., BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: I-Chien Wei, David J. Yang, Dong-Fang Yu
  • Publication number: 20170128579
    Abstract: A method of synthesizing a polysaccharide conjugate used for cancer therapy is provided. The method comprises the following steps. A polysaccharide having at least one reactive functional group is provided. The polysaccharide is reacted with at least one monomeric amino acid having an O-group, such that the at least one monomeric amino acid is covalently bound to the polysaccharide by reacting with the reactive functional group to form an amide bond. At least one metal is conjugated to the at least one monomeric amino acid through the O-group so as to form the polysaccharide conjugate. Furthermore, a method for cancer therapy that uses the polysaccharide conjugate obtained by the method above for treatment is also described.
    Type: Application
    Filed: January 25, 2017
    Publication date: May 11, 2017
    Applicants: Taiwan Hopax Chemicals Mfg. Co., Ltd., BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: David J. Yang, Dong-Fang Yu, I-Chien Wei
  • Publication number: 20170100485
    Abstract: The current disclosure, in one embodiment, includes a polysaccharide conjugate. This conjugate has a polysaccharide and at least one monomeric amino acid having an O-group covalently bound to the polysaccharide. The conjugate also has at least one metal conjugated by the O-group of the amino acid. According to another embodiment, the disclosure provides a method of synthesizing a polysaccharide conjugate by covalently bonding a monomeric amino acid having an O-group to a polysaccharide and by conjugating a metal to the O-group to form a polysaccharide conjugate. According to a third embodiment, the disclosure relates to a method of killing a cancer cell by administering to the cell an effective amount of a polysaccharide conjugate. This conjugate has a polysaccharide and at least one monomeric amino acid having an O-group covalently bound to the polysaccharide. The conjugate also has at least one metal conjugated by the O-group of the amino acid.
    Type: Application
    Filed: November 9, 2016
    Publication date: April 13, 2017
    Applicants: Taiwan Hopax Chemicals Mfg. Co., Ltd., BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: David J. Yang, Dong-Fang Yu, I-Chien Wei
  • Patent number: 9549995
    Abstract: Novel methods of synthesis of ethylenedicysteine-sugar conjugates and therapeutic and diagnostic applications of such conjugates are disclosed. Methods of synthesizing these conjugates in high purity are also presented as using starting materials such as thiazolidine carboxylic acid. Also disclosed are methods of imaging, treating and diagnosing disease in a subject using these conjugates prepared herein, such as methods of imaging a tumor within a subject and methods of diagnosing myocardial ischemia.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: January 24, 2017
    Assignee: Board of Regents, The University of Texas System
    Inventors: David J. Yang, Dong-Fang Yu
  • Patent number: 9050378
    Abstract: The invention provides, in a general sense, a new labeling strategy employing compounds that are N2S2 chelates conjugated to a targeting ligand, wherein the targeting ligand is a disease cell cycle targeting compound, a tumor angiogenesis targeting ligand, a tumor apoptosis targeting ligand, a disease receptor targeting ligand, amifostine, angiostatin, monoclonal antibody C225, monoclonal antibody CD31, monoclonal antibody CD40, capecitabine, a COX-2 inhibitor, deoxycytidine, fullerene, herceptin, human serum albumin, lactose, leuteinizing hormone, pyridoxal, quinazoline, thalidomide, transferrin, or trimethyl lysine. The present invention also pertains to kits employing the compounds of interest, and methods of assessing the pharmacology of an agent of interest using the present compounds.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: June 9, 2015
    Assignee: Board of Regents, The University of Texas System
    Inventors: David J. Yang, Dong-Fang Yu, Chang-Sok Oh, Jerry L. Bryant, Jr.
  • Publication number: 20140200329
    Abstract: The invention provides, in a general sense, a new labeling strategy employing 99mTc chelated with ethylenedicysteine (EC). EC is conjugated with a variety of ligands and chelated to 99mTc for use as an imaging agent for tissue-specific diseases. The drug conjugates of the invention may also be used as a prognostic tool or as a tool to deliver therapeutics to specific sites within a mammalian body. Kits for use in tissue-specific disease imaging are also provided.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 17, 2014
    Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: David J. YANG, Chun W. LIU, Dong-Fang YU, E. Edmund KIM
  • Patent number: 8758723
    Abstract: The present invention relates generally to the fields of chemistry and radionuclide imaging. More particularly, it concerns compositions, kits and methods for imaging and therapy involving N4 compounds and derivatives.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: June 24, 2014
    Assignee: The Board of Regents of the University of Texas System
    Inventors: David J. Yang, Chang-Sok Oh, Dong-Fang Yu, Ali Azhdarinia, Saady Kohanim
  • Publication number: 20130302245
    Abstract: Compositions and methods for imaging and for chemotherapy and radiotherapy are disclosed. More particularly, the invention concerns agents comprising a targeting moeity comprising a beta-adrenergic receptor targeting compound conjugated or embedded with ethylenediamine. The present invention also concerns methods of application of such agents for imaging and treatment of cardiovascular diseases, and kits for preparing a radiolabeled therapeutic or diagnostic agent.
    Type: Application
    Filed: April 17, 2013
    Publication date: November 14, 2013
    Applicant: THE BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: David J. YANG, Chang-sok OH, Saady KOHANIM, Dongfang YU, Richard MENDEZ, E. Edmund KIM
  • Publication number: 20130165631
    Abstract: The invention provides, in a general sense, a new labeling strategy employing 99mTc chelated with ethylenedicysteine (EC). EC is conjugated with a variety of ligands and chelated to 99mTc for use as an imaging agent for tissue-specific diseases. The drug conjugates of the invention may also be used as a prognostic tool or as a tool to deliver therapeutics to specific sites within a mammalian body. Kits for use in tissue-specific disease imaging are also provided.
    Type: Application
    Filed: July 18, 2012
    Publication date: June 27, 2013
    Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: David J. Yang, Chun W. Liu, Dong-Fang Yu, E. Edmund Kim
  • Patent number: 8440168
    Abstract: Compositions and methods for imaging and for chemotherapy and radiotherapy are disclosed. More particularly, the invention concerns agents comprising a targeting moeity comprising a beta-adrenergic receptor targeting compound conjugated or embedded with ethylenediamine. The present invention also concerns methods of application of such agents for imaging and treatment of cardiovascular diseases, and kits for preparing a radiolabeled therapeutic or diagnostic agent.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: May 14, 2013
    Assignee: The Board of Regents of the University of Texas System
    Inventors: David J. Yang, Chang-Sok Oh, Saady Kohanim, Dong-Fang Yu, Richard Mendez, E. Edmund Kim
  • Publication number: 20130039853
    Abstract: Novel methods of synthesis of chelator-targeting ligand conjugates, compositions comprising such conjugates, and therapeutic and diagnostic applications of such conjugates are disclosed. The compositions include chelator-targeting ligand conjugates optionally chelated to one or more metal ions. Methods of synthesizing these compositions in high purity are also presented. Also disclosed are methods of imaging, treating and diagnosing disease in a subject using these novel compositions, such as methods of imaging a tumor within a subject and methods of diagnosing myocardial ischemia.
    Type: Application
    Filed: July 31, 2012
    Publication date: February 14, 2013
    Inventors: David J. Yang, Dongfang Yu, Andrew S. Thompson, F. David Rollo
  • Publication number: 20120277409
    Abstract: The current disclosure, in one embodiment, includes a polysaccharide conjugate. This conjugate has a polysaccharide and at least one liner covalently bound to the polysaccharide. The conjugate also has at least one metal conjugated by said linker. According to another embodiment, the disclosure provides a method of synthesizing a polysaccharide conjugate by covalently bonding a linker to a polysaccharide to obtain an intermediate and by conjugating said intermediate to a metal to form a polysaccharide conjugate. This conjugate has a higher relaxivity, so it is suitable to be used as a contrast medium for hybrid camera.
    Type: Application
    Filed: April 10, 2012
    Publication date: November 1, 2012
    Applicants: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM, TAIWAN HOPAX CHEMS. MFG. CO., LTD.
    Inventors: DAVID J. YANG, YEN-SHIAN WU, HSIEN-FAN CHEN, YUN-CHI LO, NING TSAO, CHIH-WEI HSU
  • Patent number: 8236279
    Abstract: The invention provides, in a general sense, a new labeling strategy employing 99mTc chelated with ethylenedicysteine (EC). EC is conjugated with a variety of ligands and chelated to 99mTc for use as an imaging agent for tissue-specific diseases. The drug conjugates of the invention may also be used as a prognostic tool or as a tool to deliver therapeutics to specific sites within a mammalian body. Kits for use in tissue-specific disease imaging are also provided.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: August 7, 2012
    Assignee: Board of Regents, The University of Texas System
    Inventors: David J. Yang, Chun W. Liu, Dong-Fang Yu, E. Edmund Kim