Patents by Inventor Jang Han

Jang Han 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: 8306840
    Abstract: A method, system, and computer-readable medium is described for facilitating interactions between task requesters who have tasks that are available to be performed and task performers who are available to perform tasks. In some situations, the tasks to be performed are human performance tasks that use cognitive and other mental skills of human task performers, such as to employ judgment, perception and/or reasoning skills of the human task performers. In addition, in some situations the available tasks are submitted by human task requesters via application programs that programmatically invoke one or more application program interfaces of an electronic marketplace in order to request that the tasks be performed and to receive corresponding results of task performance in a programmatic manner, so that an ensemble of unrelated human agents can interact with the electronic marketplace to collectively perform a wide variety and large number of tasks.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: November 6, 2012
    Assignee: Amazon Technologies, Inc.
    Inventors: Peter D. Cohen, Daniel A. Sanderson, Mikhail Seregine, Brett Kiefer, Jang Han Goo, Jeffrey P. Bezos
  • Publication number: 20120122962
    Abstract: The present invention provides double-stranded RNA molecules that mediate RNA interference in target cells, preferably hepatic cells. The invention also provides double-stranded RNA molecules that are modified to be resistant to nuclease degradation, which inactivates a virus, and more specifically, hepatitis C virus (HCV). The invention also provides a method of using these modified RNA molecules to inactivate virus in mammalian cells and a method of making modified small interfering RNAs (siRNAs) using human Dicer.
    Type: Application
    Filed: March 30, 2011
    Publication date: May 17, 2012
    Applicant: NOVARTIS VACCINES AND DIAGNOSTICS, INC.
    Inventors: Jang HAN, Mi-Young SEO, Michael HOUGHTON
  • Patent number: 8138161
    Abstract: The present invention provides double-stranded RNA molecules that mediate RNA interference in target cells, preferably hepatic cells. The invention also provides double-stranded RNA (dsRNA) molecules that are modified to be resistant to nuclease degradation, which inactivates a virus, and more specifically, hepatitis C virus (HCV). The invention also provides a method of using these modified RNA molecules to inactivate virus in mammalian cells and a method of making modified small interfering RNAs (siRNAs) using human Dicer. The invention provides modified RNA molecules that are modified to include a dsRNA or siRNA wherein one or more of the pyrimidines in the RNA molecule are modified to include 2?-Fluorine. The invention also provides dsRNA or siRNA in which all pyrimidines are modified to include a 2?-Fluorine. The invention provides that the 2?-Fluorine dsRNA or siRNA molecule is further modified to include a two base deoxynucleotide “TT” sequence at the 3? end of the molecule.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: March 20, 2012
    Assignee: Novartis Vaccines and Diagnostics, Inc.
    Inventors: Jang Han, Michael Houghton
  • Patent number: 7945469
    Abstract: A method, system, and computer-readable medium is described for facilitating interactions between task requesters who have tasks that are available to be performed and task performers who are available to perform tasks. In some situations, the tasks to be performed are human performance tasks that use cognitive and other mental skills of human task performers, such as to employ judgment, perception and/or reasoning skills of the human task performers. In addition, in some situations the available tasks are submitted by human task requesters via application programs that programmatically invoke one or more application program interfaces of an electronic marketplace in order to request that the tasks be performed and to receive corresponding results of task performance in a programmatic manner, so that an ensemble of unrelated human agents can interact with the electronic marketplace to collectively perform a wide variety and large number of tasks.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: May 17, 2011
    Assignee: Amazon Technologies, Inc.
    Inventors: Peter D. Cohen, Daniel A. Sanderson, Mikhail Seregine, Brett Kiefer, Jang Han Goo, Jeffrey P. Bezos
  • Publication number: 20100227311
    Abstract: A tissue culture system for production of infectious hepatitis C virus is described. In particular, the invention provides recombinant monocistronic and bicistronic genomic constructs for production of virus, including constructs for production of wild-type HCV type 2a strain JFH1 and constructs for production of chimeric viruses comprising HCV proteins from strain JFH1 and a second HCV isolate. Constructs of the invention also include a reporter gene to facilitate measurement of RNA replication and viral infectivity in cultures. The cell culture system may also include various factors that improve viral replication or infectivity. In addition, a neutralization assay using HCV grown in cell culture is described.
    Type: Application
    Filed: August 22, 2007
    Publication date: September 9, 2010
    Inventors: Jang Han, Qui-Lim Choo, Michael Houghton, Taewoo Kwon, Hyun Chul Song, Yifei Zhu
  • Publication number: 20090287532
    Abstract: A method, system, and computer-readable medium is described for facilitating interactions between task requesters who have tasks that are available to be performed and task performers who are available to perform tasks. In some situations, the tasks to be performed are human performance tasks that use cognitive and other mental skills of human task performers, such as to employ judgment, perception and/or reasoning skills of the human task performers. In addition, in some situations the available tasks are submitted by human task requesters via application programs that programmatically invoke one or more application program interfaces of an electronic marketplace in order to request that the tasks be performed and to receive corresponding results of task performance in a programmatic manner, so that an ensemble of unrelated human agents can interact with the electronic marketplace to collectively perform a wide variety and large number of tasks.
    Type: Application
    Filed: July 27, 2009
    Publication date: November 19, 2009
    Inventors: Peter D. Cohen, Daniel A. Sanderson, Mikhail Seregine, Brett Kiefer, Jang Han Goo, Jeffrey P. Bezos
  • Publication number: 20080269148
    Abstract: The present invention provides double-stranded RNA molecules that mediate RNA interference in target cells, preferably hepatic cells. The invention also provides double-stranded RNA (dsRNA) molecules that are modified to be resistant to nuclease degradation, which inactivates a virus, and more specifically, hepatitis C virus (HCV). The invention also provides a method of using these modified RNA molecules to inactivate virus in mammalian cells and a method of making modified small interfering RNAs (siRNAs) using human Dicer. The invention provides modified RNA molecules that are modified to include a dsRNA or siRNA wherein one or more of the pyrimidines in the RNA molecule are modified to include 2?-Fluorine. The invention also provides dsRNA or siRNA in which all pyrimidines are modified to include a 2?-Fluorine. The invention provides that the 2?-Fluorine dsRNA or siRNA molecule is further modified to include a two base deoxynucleotide “TT” sequence at the 3?end of the molecule.
    Type: Application
    Filed: September 30, 2005
    Publication date: October 30, 2008
    Inventors: Jang Han, Michael Houghton
  • Publication number: 20060257852
    Abstract: An outbreak of a virulent respiratory virus, now known as Severe Acute Respiratory Syndrome (SARS), was identified in Hong Kong, China and a growing number of countries around the world in 2003. The invention relates to nucleic acids and proteins from the SARS coronavirus. These nucleic acids and proteins can be used in the preparation and manufacture of vaccine formulations, diagnostic reagents, kits, etc. The invention also provides methods for treating SARS by administering small molecule antiviral compounds, as well as methods of identifying potent small molecules for the treatment of SARS.
    Type: Application
    Filed: April 9, 2004
    Publication date: November 16, 2006
    Applicant: Chiron Corporation
    Inventors: Rino Rappuoli, Vega Masignani, Konrad Stadler, Jens Gregersen, David Chien, Jang Han, John Polo, Amy Weiner, Michael Houghton, Hyun Song, Mi-Young Seo, John Donnelly, Hans Klenk, Nicholas Valiante
  • Patent number: 7033805
    Abstract: The Hepatitis C Virus (HCV) NS3 protein contains amino acid motifs of a serine proteinase, a nucleotide triphosphatase (NTPase), and an RNA helicase. A carboxy fragment of the HCV NS3 protein was purified and possessed RNA helicase activity. Detections from the amino terminus resulted in the protein becoming soluble. Deletions from the carboxy terminus do not result in a loss of helicase activity until at least 50 amino acids are deleted. The helicase activity requires ATP and divalent cations such as Mg2+ and Mn2+. The helicase activity was blocked by monoclonal antibody specific to the HCV NS3 protein.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: April 25, 2006
    Assignee: Chiron Corporation
    Inventors: Michael Houghton, Qui-Lim Choo, Jang Han, Joonho Choe
  • Publication number: 20050277127
    Abstract: A high-throughput process of generating expression-competent, antigen-encoding immunogen DNA through amplification methodology including ligation-assisted PCR is described, as well as the use of the DNA for methods of DNA immunization. Also described is an adjuvant plasmid to enhance antibody production.
    Type: Application
    Filed: November 23, 2004
    Publication date: December 15, 2005
    Inventors: Maoxin Tian, Mark Selby, Jang Han, William Rutter, Yifel Zhu
  • Publication number: 20050058982
    Abstract: The present invention provides double-stranded RNA molecules that mediate RNA interference in target cells, preferably hepatic cells. The invention also provides double-stranded RNA molecules that are modified to be resistant to nuclease degradation, which inactivates a virus, and more specifically, hepatitis C virus (HCV). The invention also provides a method of using these modified RNA molecules to inactivate virus in mammalian cells and a method of making modified small interfering RNAs (siRNAs) using human Dicer.
    Type: Application
    Filed: July 25, 2003
    Publication date: March 17, 2005
    Inventors: Jang Han, Mi-Young Seo, Michael Houghton
  • Publication number: 20030129586
    Abstract: The Hepatitis C Virus (HCV) NS3 protein contains amino acid motifs of a serine proteinase, a nucleotide triphosphatase (NTPase), and an RNA helicase. A carboxy fragment of the HCV NS3 protein was purified and possessed RNA helicase activity. Detections from the amino terminus resulted in the protein becoming soluble. Deletions from the carboxy terminus do not result in a loss of helicase activity until at least 50 amino acids are deleted. The helicase activity requires ATP and divalent cations such as Mg2+ and Mn2+. The helicase activity was blocked by monoclonal antibody specific to the HCV NS3 protein.
    Type: Application
    Filed: November 25, 2002
    Publication date: July 10, 2003
    Inventors: Michael Houghton, Qui-Lim Choo, Jang Han, Joonho Choe
  • Patent number: 6472180
    Abstract: The Hepatitis C Virus (HCV) NS3 protein contains amino acid motifs of a serine proteinase, a nucleotide triphosphatase (NTPase), and an RNA helicase. A carboxy fragment of the HCV NS3 protein was purified and possessed RNA helicase activity. Detections from the amino terminus resulted in the protein becoming soluble. Deletions from the carboxy terminus do not result in a loss of helicase activity until at least 50 amino acids are deleted. The helicase activity requires ATP and divalent cations such as Mg2+ and Mn2+. The helicase activity was blocked by monoclonal antibody specific to the HCV NS3 protein.
    Type: Grant
    Filed: January 15, 2000
    Date of Patent: October 29, 2002
    Assignee: Chiron Corporation
    Inventors: Michael Houghton, Qui-Lim Choo, Jang Han, Joonho Choe
  • Publication number: 20020120208
    Abstract: The present invention discloses a method and system of network psychiatric diagnosis and therapy for patients suffering from attention deficit disorder.
    Type: Application
    Filed: February 21, 2002
    Publication date: August 29, 2002
    Inventors: Sun-Il Kim, Jang Han Lee, Dong Joo Kang, Dong-Pyo Jang, In-Young Kim, Jae-Seok Kim, Jeong-Hun Ku, Back-Hwan Cho
  • Patent number: 6194140
    Abstract: The Hepatitis C Virus (HCV) NS3 protein contains amino acid motifs of a serine proteinase, a nucleotide triphosphatase (NTPase), and an RNA helicase. A carboxy fragment of the HCV NS3 protein was purified and possessed RNA helicase activity. Deletions from the amino terminus resulted in the protein becoming soluble. Deletions from the carboxy terminus do not result in a loss of helicase activity until at least 50 amino acids are deleted. The helicase activity requires ATP and divalent cations such as Mg2+ and Mn2+. The helicase activity was blocked by monoclonal antibody specific to the HCV NS3 protein.
    Type: Grant
    Filed: September 15, 1995
    Date of Patent: February 27, 2001
    Assignee: Chiron Corporation
    Inventors: Michael Houghton, Qui-Lim Choo, Jang Han, Joonho Choe
  • Patent number: 5989905
    Abstract: The Hepatitis C Virus (HCV) NS3 protein contains amino acid motifs of a serine proteinase, a nucleotide triphosphatase (NTPase), and an RNA helicase. A carboxy fragment of the HCV NS3 protein was purified and possessed RNA helicase activity. Detections from the amino terminus resulted in the protein becoming soluble. Deletions from the carboxy terminus do not result in a loss of helicase activity until at least 50 amino acids are deleted. The helicase activity requires ATP and divalent cations such as Mg.sup.2+ and Mn.sup.2+. The helicase activity was blocked by monoclonal antibody specific to the HCV NS3 protein.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: November 23, 1999
    Assignee: Chiron Corporation
    Inventors: Michael Houghton, Qui-Lim Choo, Jang Han, Joonho Choe
  • Patent number: 5953602
    Abstract: An EEPROM cell of reduced leakage current during erasure and improved cell topology includes a first conductivity type substrate having a channel region, a trench formed in the channel region of the substrate, first spacers formed on opposed sidewalls of the trench, and a gate oxide film formed at the bottom of the trench between the first spacers. Second conductivity type source/drain regions are formed in the substrate at opposite side of the trench. A tunneling oxide film is further provided on the substrate overlying the drain region and proximate the trench. An insulation film is provided over the entire substrate surface except the trench and the tunneling oxide film. In addition, a floating gate is formed on the insulation film over the source and drain regions, as well as the gate oxide film at the trench bottom. Second spacers are provided on the insulation film at opposed side surfaces of the floating gate.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: September 14, 1999
    Assignee: LG Semicon Co., Ltd.
    Inventors: Han Su Oh, Jang Han Kim
  • Patent number: 5856437
    Abstract: Two new isolates of the Hepatitis C virus (HCV), J1 and J7, are disclosed. These new isolates comprise nucleotide and amino acid sequences which are distinct from the prototype HCV isolate, HCV1. Thus, J1 and J7 provide new polynucleotides and polypeptides for use, inter alia, in diagnostics, recombinant protein production and vaccine development.
    Type: Grant
    Filed: November 3, 1994
    Date of Patent: January 5, 1999
    Assignees: Chiron Corporation, The Director General of the National Institute of Health of Japan
    Inventors: Tatsuo Miyamura, Izumi Saito, Michael Houghton, Amy J. Weiner, Jang Han, Janice A. Kolberg, Tai-An Cha, Bruce D. Irvine
  • Patent number: 5736765
    Abstract: An EEPROM cell of reduced leakage current during erasure and improved cell topology includes a first conductivity type substrate having a channel region, a trench formed in the channel region of the substrate, first spacers formed on opposed sidewalls of the trench, and a gate oxide film formed at the bottom of the trench between the first spacers. Second conductivity type source/drain regions are formed in the substrate at opposite side of the trench. A tunneling oxide film is further provided on the substrate overlying the drain region and proximate the trench. An insulation film is provided over the entire substrate surface except the trench and the tunneling oxide film. In addition, a floating gate is formed on the insulation film over the source and drain regions, as well as the gate oxide film at the trench bottom. Second spacers are provided on the insulation film at opposed side surfaces of the floating gate.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: April 7, 1998
    Assignee: LG Semicon Co., Ltd.
    Inventors: Han Su Oh, Jang Han Kim
  • Patent number: 5714596
    Abstract: A new virus, Hepatitis C virus (HCV), which has proven to be the major etiologic agent of blood-borne NANBH, was discovered by Applicant. Reagents for isolating, amplifying, and detecting HCV polynucleotides are provided. These reagents are oligomers comprised of polynucleotide sequences which are capable of forming hybrid structures with HCV target polynucleotide sequences.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: February 3, 1998
    Assignee: Chiron Corporation
    Inventors: Michael Houghton, Qui-Lim Choo, George Kuo, Amy J. Weiner, Jang Han, Michael Steven Urdea, Bruce Duncan Irvine, Janice A. Kolberg