Patents by Inventor Dongcheng Dai

Dongcheng Dai 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: 20140301979
    Abstract: Described herein are 4-methyl-piperazine-1-carbothioic acid amide derivatives and analogs, as well as compositions containing the same, for the treatment or prophylaxis of viral infections and diseases associated therewith, particularly those viral infections and associated diseases caused by hemorrhagic fever viruses, such as Arenaviruses.
    Type: Application
    Filed: June 25, 2014
    Publication date: October 9, 2014
    Applicant: SIGA TECHNOLOGIES, INC.,
    Inventors: Sean M. AMBERG, Dongcheng DAI, Tove C. BOLKEN, Dennis E. HRUBY
  • Publication number: 20140243367
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by the Arenavirus family such as Lassa fever, Argentine hemorrhagic fever, Bolivian hemorrhagic fever, and Venezuelan hemorrhagic fever.
    Type: Application
    Filed: May 7, 2014
    Publication date: August 28, 2014
    Applicant: SIGA TECHNOLOGIES, INC.
    Inventors: Dongcheng DAI, Dennis E. HRUBY, Tove C. BOLKEN, Sean M. AMBERG, Ryan A. LARSON
  • Patent number: 8802714
    Abstract: Methods of using di, tri, and tetracyclic acylhydrazide derivatives and analogs, as well as pharmaceutical compositions containing the same, for the treatment or prophylaxis of viral infections and diseases associated therewith, particularly those viral infections and associated diseases caused by the orthopoxvirus.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: August 12, 2014
    Assignee: Siga Technologies, Inc.
    Inventors: Robert F. Jordan, Thomas R. Bailey, Susan R. Rippin, Dongcheng Dai
  • Patent number: 8791110
    Abstract: Described herein are 4-methyl-piperazine-1-carbothioic acid amide derivatives and analogs, as well as compositions containing the same, for the treatment or prophylaxis of viral infections and diseases associated therewith, particularly those viral infections and associated diseases caused by hemorrhagic fever viruses, such as Arenaviruses.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: July 29, 2014
    Assignee: Siga Technologies, Inc.
    Inventors: Sean M. Amberg, Dongcheng Dai, Tove C. Bolken, Dennis E. Hruby
  • Patent number: 8754082
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by the Arenavirus family such as Lassa fever, Argentine hemorrhagic fever, Bolivian hemorrhagic fever, and Venezuelan hemorrhagic fever.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: June 17, 2014
    Assignee: Siga Technologies, Inc.
    Inventors: Dongcheng Dai, Dennis E. Hruby, Tove C. Bolken, Sean M. Amberg, Ryan A. Larson
  • Publication number: 20140100245
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by the Arenavirus family is disclosed.
    Type: Application
    Filed: November 27, 2013
    Publication date: April 10, 2014
    Applicant: SIGA TECHNOLOGIES, INC.
    Inventors: Dongcheng Dai, DENNIS E. HRUBY, TOVE C. BOLKEN, SEAN M. AMBERG, TRAVIS K. WARREN
  • Patent number: 8664274
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain novel sulfonyl semicarbazides, carbonyl semicarbazides, semicarbazides, ureas and related compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by hemorrhagic fever viruses is disclosed, i.e., including but not limited to, Arenaviridae (Junin, Machupo, Guanarito, Sabia, Lassa, Tacaribe, Pinchinde, and VSV), Filoviridae (ebola and Marburg viruses), Flaviviridae (yellow fever, omsk hemorrhagic fever and Kyasanur Forest disease viruses), and Bunyaviridae (Rift Valley fever).
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: March 4, 2014
    Assignee: Siga Technologies, Inc.
    Inventors: Dongcheng Dai, Tove Bolken, Dennis E. Hruby, Thomas R. Bailey
  • Patent number: 8658697
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain novel sulfonyl semicarbazides, carbonyl semicarbazides, semicarbazides, ureas and related compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by hemorrhagic fever viruses is disclosed, i.e., including but not limited to, Arenaviridae (Junin, Machupo, Guanarito, Sabia, Lassa, Tacaribe, Pinchinde, and VSV), Filoviridae (ebola and Marburg viruses), Flaviviridae (yellow fever, omsk hemorrhagic fever and Kyasanur Forest disease viruses), and Bunyaviridae (Rift Valley fever).
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: February 25, 2014
    Assignee: Siga Technologies, Inc.
    Inventors: Dongcheng Dai, Tove Bolken, Dennis E. Hruby, Thomas R. Bailey
  • Patent number: 8629170
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain novel compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by hemorrhagic fever viruses is disclosed, i.e., including but not limited to, Arenaviridae (Junin, Machupo, Guanarito, Sabia, Lassa, Tacaribe, Pichinde, and LCMV), Filoviridae (Ebola and Marburg viruses), Flaviviridae (yellow fever, Omsk hemorrhagic fever and Kyasanur Forest disease viruses), and Bunyaviridae (Rift Valley fever).
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: January 14, 2014
    Assignee: Siga Technologies, Inc.
    Inventors: Dennis E. Hruby, Tove Bolken, Sean M. Amberg, Dongcheng Dai
  • Patent number: 8623347
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by the Arenavirus family is disclosed.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: January 7, 2014
    Assignee: Siga Technologies, Inc.
    Inventors: Dongcheng Dai, Dennis E. Hruby, Tove C. Bolken, Sean M. Amberg, Travis K. Warren
  • Publication number: 20130345278
    Abstract: Methods of using di, tri, and tetracyclic acylhydrazide derivatives and analogs, as well as pharmaceutical compositions containing the same, for the treatment or prophylaxis of viral infections and diseases associated therewith, particularly those viral infections and associated diseases caused by the orthopoxvirus.
    Type: Application
    Filed: August 14, 2013
    Publication date: December 26, 2013
    Applicant: Siga Technologies, Inc.
    Inventors: Robert F. Jordan, Thomas R. Bailey, Susan R. Rippin, Dongcheng Dai
  • Publication number: 20130303491
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by flavivirus is disclosed, i.e., including but not limited to, Dengue virus, West Nile virus, yellow fever virus, Japanese encephalitis virus, and tick-borne encephalitis virus.
    Type: Application
    Filed: July 22, 2013
    Publication date: November 14, 2013
    Applicant: Siga Technologies Inc.
    Inventors: Chelsea M. Byrd, Robert Jordan, Dongcheng Dai, Tove Bolken, Dennis E. Hruby
  • Publication number: 20130261087
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain novel sulfonyl semicarbazides, carbonyl semicarbazides, semicarbazides, ureas and related compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by hemorrhagic fever viruses is disclosed, i.e., including but not limited to, Arenaviridae (Junin, Machupo, Guanarito, Sabia, Lassa, Tacaribe, Pinchinde, and VSV), Filoviridae (ebola and Marburg viruses), Flaviviridae (yellow fever, omsk hemorrhagic fever and Kyasanur Forest disease viruses), and Bunyaviridae (Rift Valley fever).
    Type: Application
    Filed: July 6, 2011
    Publication date: October 3, 2013
    Applicant: SIGA TECHNOLOGIES INC.
    Inventors: DONGCHENG DAI, TOVE C. BOLKEN, DENNIS E. HRUBY, THOMAS R. BAILEY
  • Patent number: 8530509
    Abstract: Methods of using di, tri, and tetracyclic acylhydrazide derivatives and analogs, as well as pharmaceutical compositions containing the same, for the treatment or prophylaxis of viral infections and diseases associated therewith, particularly those viral infections and associated diseases caused by the orthopoxvirus.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: September 10, 2013
    Assignee: Siga Technologies, Inc.
    Inventors: Robert Jordan, Thomas R. Bailey, Susan R. Rippin, Dongcheng Dai
  • Patent number: 8518960
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by flavivirus is disclosed, i.e., including but not limited to, Dengue virus, West Nile virus, yellow fever virus, Japanese encephalitis virus, and tick-borne encephalitis virus.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: August 27, 2013
    Assignee: Siga Technologies, Inc.
    Inventors: Chelsea M. Byrd, Robert Jordan, Dongcheng Dai, Tove Bolken, Dennis E. Hruby
  • Patent number: 8518951
    Abstract: Described herein are 4-methyl-piperazine-1-carbothioic acid amide derivatives and analogs, as well as compositions containing the same, for the treatment or prophylaxis of viral infections and diseases associated therewith, particularly those viral infections and associated diseases caused by hemorrhagic fever viruses, such as Arenaviruses.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: August 27, 2013
    Assignee: Siga Technologies, Inc.
    Inventors: Dennis E. Hruby, Tove C. Bolken, Dongcheng Dai
  • Publication number: 20130195796
    Abstract: Compounds, pharmaceutical compositions and methods for treating viral and bacterial infections, by administering certain thiourea compounds, specifically acylthiourea, carboximidoylthiourea and S-alkyl isothiourea derivatives and analogs, in therapeutically effective amounts are disclosed.
    Type: Application
    Filed: February 18, 2011
    Publication date: August 1, 2013
    Applicant: Siga Technologies Inc.
    Inventors: Robert D. Allen, Sean M. Amberg, Dongcheng Dai, Dennis E. Hruby
  • Patent number: 8492434
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain novel compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by hemorrhagic fever viruses is disclosed, i.e., including but not limited to, Arenaviridae (Junin, Machupo, Guanarito, Sabia, Lassa, Tacaribe, and Pichinde), Filoviridae (Ebola and Marburg viruses), Flaviviridae (yellow fever, Omsk hemorrhagic fever and Kyasanur Forest disease viruses), and Bunyaviridae (Rift Valley fever).
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: July 23, 2013
    Assignee: Siga Technologies Inc.
    Inventors: Dennis E. Hruby, Tove C. Bolken, Sean Amberg, Dongcheng Dai
  • Publication number: 20130165493
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain novel compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by hemorrhagic fever viruses is disclosed, i.e., including but not limited to, Arenaviridae (Junin, Machupo, Guanarito, Sabia, Lassa, Tacaribe, and Pichinde), Filoviridae (Ebola and Marburg viruses), Flaviviridae (yellow fever, Omsk hemorrhagic fever and Kyasanur Forest disease viruses), and Bunyaviridae (Rift Valley fever).
    Type: Application
    Filed: February 22, 2012
    Publication date: June 27, 2013
    Applicant: Siga Technologies, Inc,
    Inventors: Dennis E. Hruby, Tove C. Bolken, Sean M. Amberg, Dongcheng Dai
  • Patent number: 8461177
    Abstract: Compounds, methods and pharmaceutical compositions for treating viral infections, by administering certain compounds in therapeutically effective amounts are disclosed. Methods for preparing the compounds and methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by the Arenavirus family such as Lassa fever, Argentine hemorrhagic fever, Bolivian hemorrhagic fever, and Venezuelan hemorrhagic fever.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: June 11, 2013
    Assignee: Siga Technologies, Inc.
    Inventors: Dongcheng Dai, Dennis E. Hruby, Tove C. Bolken, Sean M. Amberg, Ryan A. Larson