Patents by Inventor Qianwa Liang

Qianwa Liang 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).

  • Patent number: 10821196
    Abstract: The present application is directed to radiolabeled imaging agents comprising a radiolabel, and a substrate, pharmaceutical compositions comprising radiolabeled imaging agents, and methods of using the radiolabeled imaging agents. The present application is further directed to methods of preparing the radiolabeled imaging agent. Such imaging agents can used in imaging studies, such as Positron Emitting Tomography (PET) or Single Photon Emission Computed Tomography (SPECT).
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: November 3, 2020
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Kai Chen, Umesh B. Gangadharmath, Gang Chen, Vani P. Mocharla, Dhanalakshmi Kasi, Peter J. H. Scott, Qianwa Liang
  • Publication number: 20150182643
    Abstract: The present application is directed to radiolabeled imaging agents comprising a radiolabel, and a substrate, pharmaceutical compositions comprising radiolabeled imaging agents, and methods of using the radiolabeled imaging agents. The present application is further directed to methods of preparing the radiolabeled imaging agent. Such imaging agents can used in imaging studies, such as Positron Emitting Tomography (PET) or Single Photon Emission Computed Tomography (SPECT).
    Type: Application
    Filed: March 10, 2015
    Publication date: July 2, 2015
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Kai Chen, Umesh B. Gangadharmath, Gang Chen, Vani P. Mocharla, Dhanalakshmi Kasi, Peter J.H. Scott, Qianwa Liang
  • Patent number: 9005577
    Abstract: The present application is directed to radiolabeled imaging agents comprising a radiolabel, and a substrate, pharmaceutical compositions comprising radiolabeled imaging agents, and methods of using the radiolabeled imaging agents. The present application is further directed to methods of preparing the radiolabeled imaging agent. Such imaging agents can used in imaging studies, such as Positron Emitting Tomography (PET) or Single Photon Emission Computed Tomography (SPECT).
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: April 14, 2015
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Kai Chen, Umesh B. Gangadharmath, Gang Chen, Vani P. Mocharla, Dhanalakshmi Kasi, Peter J. H. Scott, Qianwa Liang
  • Patent number: 8486372
    Abstract: The present application is directed to radiolabeled cyclic polyazapeptides, pharmaceutical compositions comprising radiolabeled cyclic polyazapeptides, and methods of using the radiolabeled cyclic polyazapeptides. Such polyazapeptides can be used in imaging studies, such as Positron Emitting Tomography (PET) or Single Photon Emission Computed Tomography (SPECT).
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: July 16, 2013
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Hartmuth C. Kolb, Kai Chen, Joseph C. Walsh, Dhanalakshmi Kasi, Vani P. Mocharla, Gang Chen, Qianwa Liang, Tieming Zhao
  • Patent number: 8420052
    Abstract: Provided herein are compounds and compositions which comprise the formulae as disclosed herein, wherein the compound is an amyloid binding compound. An amyloid binding compound according to the invention may be administered to a patient in amounts suitable for in vivo imaging of amyloid deposits, and distinguish between neurological tissue with amyloid deposits and normal neurological tissue. Amyloid probes of the invention may be used to detect and quantitate amyloid deposits in diseases including, for example, Down's syndrome, familial Alzheimer's Disease. In another embodiment, the compounds may be used in the treatment or prophylaxis of neurodegenerative disorders. Also provided herein are methods of allowing the compound to distribute into the brain tissue, and imaging the brain tissue, wherein an increase in binding of the compound to the brain tissue compared to a normal control level of binding indicates that the mammal is suffering from or is at risk of developing a neurodegenerative disease.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: April 16, 2013
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Wei Zhang, Umesh B. Gangadharmath, Dhanalakshmi Kasi, Kai Chen, Anjana Sinha, Eric Wang, Gang Chen, Peter J. H. Scott, Henry Clifton Padgett, Qianwa Liang, Zhiyong Gao, Tieming Zhao, Chunfang Xia, Vani P. Mocharla
  • Patent number: 8354092
    Abstract: The present application discloses methods for identifying inhibitors with high binding-affinity for the carbonic anhydrase-IX (CA-IX) enzyme using click chemistry and uses the candidates thereof as positron emission tomography (PET) imaging agents.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: January 15, 2013
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Dhanalakshmi Kasi, Vani P. Mocharla, Bing Wang, Umesh B. Gangadharmath, Brian A. Duclos, Kai Chen, Wei Zhang, Gang Chen, Henry Clifton Padgett, Farhad Karimi, Peter J. H. Scott, Zhiyong Gao, Qianwa Liang, Thomas Lee Collier, Tieming Zhao, Chunfang Xia
  • Patent number: 8133472
    Abstract: Radiolabeled cyclic polypeptides, pharmaceutical compositions comprising radiolabeled cyclic polypeptides, and methods of using the radiolabeled cyclic polypeptides. Such polypeptides can be used in imaging studies, such as Positron Emitting Tomography (PET) or Single Photon Emission Computed Tomography (SPECT).
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: March 13, 2012
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Hartmuth C. Kolb, Kai Chen, Joseph C. Walsh, Qianwa Liang
  • Patent number: 8043601
    Abstract: The present application is directed to radiolabeled cyclic polyazapeptides, pharmaceutical compositions comprising radiolabeled cyclic polyazapeptides, and methods of using the radiolabeled cyclic polyazapeptides. Such polyazapeptides can be used in imaging studies, such as Positron Emitting Tomography (PET) or Single Photon Emission Computed Tomography (SPECT).
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: October 25, 2011
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Hartmuth C. Kolb, Kai Chen, Joseph C. Walsh, Dhanalakshmi Kasi, Vani P. Mocharla, Gang Chen, Qianwa Liang, Tieming Zhao
  • Publication number: 20110256057
    Abstract: The present application is directed to radiolabeled cyclic polyazapeptides, pharmaceutical compositions comprising radiolabeled cyclic polyazapeptides, and methods of using the radiolabeled cyclic polyazapeptides. Such polyazapeptides can be used in imaging studies, such as Positron Emitting Tomography (PET) or Single Photon Emission Computed Tomography (SPECT).
    Type: Application
    Filed: May 23, 2011
    Publication date: October 20, 2011
    Applicant: SIEMENS MEDICAL SOLUTIONS USA, INC.
    Inventors: Hartmuth C. Kolb, Kai Chen, Joseph C. Walsh, Dhanalakshmi Kasi, Vani P. Mocharla, Gang Chen, Qianwa Liang, Tieming Zhao
  • Patent number: 7977361
    Abstract: The present invention relates to novel radioactively labeled bioreducible tracers of Formula I useful for detecting hypoxic tumors or ischemic tissue in vivo. In one embodiment, the tracers consist of a 2-nitroimidazole moiety, a triazole, metabolically stable linker with pharmacokinetics enhancing substituents, and a radioisotope. The preferred in vivo imaging modality is positron emission tomography.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: July 12, 2011
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Thomas Lee Collier, Brian A. Duclos, Umesh B. Gangadharmath, Zhiyong Gao, Farhad Karimi, Dhanalakshmi Kasi, Hartmuth C. Kolb, Qianwa Liang, Henry Clifton Padgett, Joseph C. Walsh, Tieming Zhao
  • Publication number: 20110091382
    Abstract: Disclosed here in are compounds and methods of diagnosing Alzheimer's Disease or a predisposition thereto in a mammal, the method comprising administering to the mammal a diagnostically effective amount of a radiolabeled compound, wherein the compound is selected from the group consisting of radiolabeled flavones, coumarins, carbazoles, quinolinones, chromenones, imidazoles and triazoles derivatives, allowing the compound to distribute into the brain tissue, and imaging the brain tissue, wherein an increase in binding of the compound to the brain tissue compared to a normal control level of binding indicates that the mammal is suffering from or is at risk of developing Alzheimer's Disease.
    Type: Application
    Filed: February 17, 2009
    Publication date: April 21, 2011
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Qianwa Liang, Brian A. Duclos, Wei Zhang, Peter J.H. Scott, Kai Chen, Zhiyong Gao, Tieming Zhao, Vani P. Mocharla, Dhanalakshmi Kasi, Gang Chen, Eric Wang, Anjana Sinha, Chunfang Xia, Henry Clifton Padgett, Farhad Karimi
  • Patent number: 7928210
    Abstract: Disclosed herein are novel radiolabeled nucleosides and methods for detecting cellular proliferation in a mammal, the method comprising administrating an effective amount of a radiolabeled nucleoside; the method comprising: a) administering to the mammal a diagnostically effective amount of the nucleoside to the mammal; b) allowing the nucleoside to distribute into the effective tissue; and c) imaging the tissue, wherein an increase in binding of the compound to tissue compared to a normal control level of binding indicates that the mammal is suffering from a disease involving cellular proliferation.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: April 19, 2011
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Robert M Yeh, Kai Chen, Umesh Gangadharmath, Brian Duclos, Vani P. Mocharla, Farhad Karimi, Henry C. Padgett, Qianwa Liang, Tieming Zhao
  • Publication number: 20110046378
    Abstract: Disclosed here in are compounds and methods of diagnosing Alzheimer's Disease or a predisposition thereto in a mammal, the method comprising administering to the mammal a diagnostically effective amount of a radiolabeled compound, wherein the compound is selected from the group consisting of radiolabeled flavones, coumarins, carbazoles, quinolinones, chromenones, imidazoles and triazoles derivatives, allowing the compound to distribute into the brain tissue, and imaging the brain tissue, wherein an increase in binding of the compound to the brain tissue compared to a normal control level of binding indicates that the mammal is suffering from or is at risk of developing Alzheimer's Disease
    Type: Application
    Filed: February 17, 2009
    Publication date: February 24, 2011
    Applicant: SIEMENS MEDICAL SOLUTIONS USA, INC.
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Qianwa Liang, Brian A. Duclos, Wei Zhang, Peter J.H. Scott, Kai Chen, Zhiyong Gao, Tieming Zhao, Vani P. Mocharla, Dhanalakshmi Kasi, Gang Chen, Eric Wang, Anjana Sinha, Chunfang Xia, Henry Clifton Padgett, Farhad Karimi
  • Publication number: 20110002850
    Abstract: The present invention relates to novel radioactively labeled bioreducible tracers of Formula I useful for detecting hypoxic tumors or ischemic tissue in vivo. In one embodiment, the tracers consist of a 2-nitroimidazole moiety, a triazole, metabolically stable linker with pharmacokinetics enhancing substituents, and a radioisotope. The preferred in vivo imaging modality is positron emission tomography.
    Type: Application
    Filed: July 15, 2010
    Publication date: January 6, 2011
    Applicant: SIEMENS MEDICAL SOLUTIONS USA, INC.
    Inventors: Thomas Lee Collier, Brian A. Duclos, Umesh B. Gangadharmath, Zhiyong Gao, Farhad Karimi, Dhanalakshmi Kasi, Hartmuth C. Kolb, Qianwa Liang, Henry Clifton Padgett, Joseph C. Walsh, Tieming Zhao
  • Publication number: 20100317842
    Abstract: The present application discloses methods for identifying inhibitors with high binding-affinity for the carbonic anhydrase-IX (CA-IX) enzyme using click chemistry and uses the candidates thereof as positron emission tomography (PET) imaging agents.
    Type: Application
    Filed: August 25, 2010
    Publication date: December 16, 2010
    Applicant: SIEMENS MEDICAL SOLUTIONS USA, INC.
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Dhanalakshmi Kasi, Vani P. Mocharla, Bing Wang, Umesh B. Gangadharmath, Brian A. Duclos, Kai Chen, Wei Zhang, Gang Chen, Henry Clifton Padgett, Farhad Karimi, Peter J.H. Scott, Zhiyong Gao, Qianwa Liang, Thomas Lee Collier, Tieming Zhao, Chunfang Xia
  • Patent number: 7829063
    Abstract: The present application discloses methods for identifying inhibitors with high binding-affinity for the carbonic anhydrase-IX (CA-IX) enzyme using click chemistry and uses the candidates thereof as positron emission tomography (PET) imaging agents.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: November 9, 2010
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Dhanalakshmi Kasi, Vani P. Mocharla, Bing Wang, Umesh B. Gangadharmath, Brian A. Duclos, Kai Chen, Wei Zhang, Gang Chen, Henry Clifton Padgett, Farhad Karimi, Peter J. H. Scott, Zhiyong Gao, Qianwa Liang, Thomas Lee Collier, Tieming Zhao, Chunfang Xia
  • Patent number: 7807394
    Abstract: The present invention relates to novel radioactively labeled bioreducible tracers of Formula I useful for detecting hypoxic tumors or ischemic tissue in vivo. In one embodiment, the tracers consist of a 2-nitroimidazole moiety, a triazole, metabolically stable linker with pharmacokinetics enhancing substituents, and a radioisotope. The preferred in vivo imaging modality is positron emission tomography.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: October 5, 2010
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Umesh B. Gangadharmath, Farhad Karimi, Henry Clifton Padgett, Dhanalakshmi Kasi, Zhiyong Gao, Qianwa Liang, Thomas Lee Collier, Brian A. Duclos, Tieming Zhao
  • Publication number: 20100098634
    Abstract: Provided herein are compounds and compositions which comprise the formulae as disclosed herein, wherein the compound is an amyloid binding compound. An amyloid binding compound according to the invention may be administered to a patient in amounts suitable for in vivo imaging of amyloid deposits, and distinguish between neurological tissue with amyloid deposits and normal neurological tissue. Amyloid probes of the invention may be used to detect and quantitate amyloid deposits in diseases including, for example, Down's syndrome, familial Alzheimer's Disease. In another embodiment, the compounds may be used in the treatment or prophylaxis of neurodegenerative disorders. Also provided herein are methods of allowing the compound to distribute into the brain tissue, and imaging the brain tissue, wherein an increase in binding of the compound to the brain tissue compared to a normal control level of binding indicates that the mammal is suffering from or is at risk of developing a neurodegenerative disease.
    Type: Application
    Filed: July 24, 2009
    Publication date: April 22, 2010
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Wei Zhang, Umesh B. Gangadharmath, Dhanalakshmi Kasi, Kai Chen, Anjana Sinha, Eric Wang, Gang Chen, Peter J.H. Scott, Henry Clifton Padgett, Qianwa Liang, Zhiyong Gao, Tieming Zhao, Chunfang Xia
  • Publication number: 20100074843
    Abstract: The present application is directed to radiolabeled imaging agents comprising a radiolabel, and a substrate, pharmaceutical compositions comprising radiolabeled imaging agents, and methods of using the radiolabeled imaging agents. The present application is further directed to methods of preparing the radiolabeled imaging agent. Such imaging agents can used in imaging studies, such as Positron Emitting Tomography (PET) or Single Photon Emission Computed Tomography (SPECT).
    Type: Application
    Filed: April 30, 2009
    Publication date: March 25, 2010
    Applicant: Siemens Medical Solutions USA, Inc.
    Inventors: Hartmuth C. Kolb, Joseph C. Walsh, Kai Chen, Umesh B. Gangadharmath, Gang Chen, Vani P. Mocharla, Dhanalakshmi Kasi, Peter J.H. Scott, Qianwa Liang
  • Publication number: 20100074844
    Abstract: Radiolabeled cyclic polypeptides, pharmaceutical compositions comprising radiolabeled cyclic polypeptides, and methods of using the radiolabeled cyclic polypeptides. Such polypeptides can be used in imaging studies, such as Positron Emitting Tomography (PET) or Single Photon Emission Computed Tomography (SPECT).
    Type: Application
    Filed: April 30, 2009
    Publication date: March 25, 2010
    Applicant: Siemens Medical Solutions USA, Inc.
    Inventors: Hartmuth C. Kolb, Kai Chen, Joseph C. Walsh, Qianwa Liang