Patents by Inventor Qi Xu

Qi Xu 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: 6907574
    Abstract: A system and method for navigating between hyperlinks and frames on a Web page within a Web browser in a client system in communication with one or more server systems. A plurality of hyperlinks and frames are displayed on a display of a user device via the Web browser, with each hyperlink and frame representing information about their location stored in one of the server systems. A user input entered from a remote input device is received by the client system. Based on the user input, a determination is made of which one of the hyperlinks or frames is to be marked as the active frame or link, and that hyperlink or frame is then marked. An indicator is then displayed on the display device indicating to the user that the selected hyperlink or frame has been made active.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: June 14, 2005
    Assignee: ICTV, Inc.
    Inventors: Qi Xu, Mark Tom
  • Publication number: 20050084336
    Abstract: An extendable draft platform, having a deck and buoyancy columns installed in leg wells in the deck for vertical movement from a raised position to a submerged position, includes a connection arrangement for securing the columns to the deck when the columns are in the submerged position. In the connection arrangement, a plurality of first guide elements near the top of each column is engageable by a plurality of complementary second guide elements secured to the deck around each leg well when the column is lowered to its submerged position. A locking mechanism is operable between the columns and the deck when the first guide elements are engaged with the second guide elements. The first and second guide elements may be configured so that the connection between the deck and the columns may be enhanced by over-ballasting the columns and/or by welding the columns to the deck.
    Type: Application
    Filed: September 27, 2004
    Publication date: April 21, 2005
    Applicant: Technip France
    Inventors: Qi Xu, Phillip Abbott
  • Publication number: 20040077554
    Abstract: The present invention relates to anti-tumor compounds, compositions and methods. In particular, the invention relates to indolocarbazole analogues of the following general formulas that inhibit topoisomerase I activity.
    Type: Application
    Filed: June 30, 2003
    Publication date: April 22, 2004
    Applicant: Advanced Life Sciences, Inc.
    Inventors: Ze-Qi Xu, Yasheen Zhou, Michael T. Flavin
  • Publication number: 20040073953
    Abstract: An apparatus for transmitting multimedia data to a set-top box for distribution to a headend of a cable television. The apparatus includes an input for a signal containing multimedia data. The apparatus has a module for compressing the multimedia data and also a packetizing module. The packetizing module adds a header. Since the headend is the only destination of the multimedia data, a destination address is unnecessary in the header, but the header does include an indicator as to source and an order identifier for each of the packets. The headend can then receive the packets, re-order the packets and decompress the multimedia data. The data may then be processed by a processor at the headend that is assigned at the beginning of an interactive session.
    Type: Application
    Filed: June 25, 2003
    Publication date: April 15, 2004
    Inventors: Qi Xu, W. Leo Hoarty, Gary M. Lauder
  • Patent number: 6670383
    Abstract: The present invention relates to compounds and compositions useful in treating or preventing conditions and diseases related to Mycobacterium infection, and methods of use directed thereto.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: December 30, 2003
    Assignee: Advanced Life Sciences, Inc.
    Inventors: Ze-Qi Xu, Krzysztof Pupek, Livia Enache, Michael T. Flavin
  • Patent number: 6652192
    Abstract: A heave suppressed, floating offshore drilling and production platform comprises vertical columns, lateral trusses connecting adjacent columns, a deep-submerged horizontal plate supported from the bottom of the columns by vertical truss legs, and a topside deck supported by the columns. The lateral trusses connect adjacent columns near their lower end to enchance the structural intergrity of the platform. During the launch of the platform and towing in relatively shallow water, the truss legs are stowed in shafts within each column, and the plate is carried just below the lower ends of the columns. After the platform has been floated to the deep water drilling and production site, the truss legs are lowered from the column shafts to lower the plate to a deep draft for reducing the effect of wave forces and to provide heave and vertical motion resistance to the platform.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: November 25, 2003
    Assignee: CSO Aker Maritime, Inc.
    Inventors: Qi Xu, Phillip A. Abbott, John Halkyard
  • Publication number: 20030186945
    Abstract: A composition and method of preventing or inhibiting tumor growth and, more particularly, of treating a malignant tumor, using prodrugs of plant-derived compounds and derivatives is disclosed. In the method, a composition containing betulinic acid or a betulinic acid derivative is administered in a prodrug form to release betulinic acid or a betulinic acid derivative in vivo at the tumor site.
    Type: Application
    Filed: January 13, 2003
    Publication date: October 2, 2003
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: John M. Pezzuto, Jerome W. Kosmeder, Ze-Qi Xu, Nian En Zhou, Miriam Elaine Goldsmith
  • Publication number: 20030176494
    Abstract: The present invention relates to methods of preparation and use of coumarin and chromene compounds for treating or preventing viral infections.
    Type: Application
    Filed: November 15, 2002
    Publication date: September 18, 2003
    Inventors: Ze-Qi Xu, Hongwei Yuan, Jennifer Crabb, Raghu Samy, Ailing Li, Hua Cao, Jeff Deignan, Lihui Sun
  • Patent number: 6569842
    Abstract: A composition and method of preventing or inhibiting tumor growth and, more particularly, of treating a malignant tumor, using prodrugs of plant-derived compounds and derivatives is disclosed. In the method, a composition containing betulinic acid or a betulinic acid derivative is administered in a prodrug form to release betulinic acid or a betulinic acid derivative in vivo at the tumor site.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: May 27, 2003
    Assignee: Board of Trustees of the University of Illinois, The
    Inventors: John M. Pezzuto, Jerome W. Kosmeder, II, Ze-Qi Xu, Nian En Zhou, Miriam Elaine Goldsmith
  • Publication number: 20030083369
    Abstract: The present invention relates to compounds and compositions useful in treating or preventing conditions and diseases related to Mycobacterium infection, and methods of use directed thereto.
    Type: Application
    Filed: March 15, 2002
    Publication date: May 1, 2003
    Inventors: Ze-Qi Xu, Krzysztof Pupek, Livia Enache, Michael T. Flavin
  • Publication number: 20020168232
    Abstract: A mechanism to be applied to an exterior surface of a cylindrical structure for reduction of the effect of Vortex Induce Vibration (VIV) in the cylindrical structure when immersed in flowing fluid. The mechanism is provided with a generally cylindrical column having a central axis, an interior surface corresponding in size and shape to the exterior surface of the cylindrical structure to which the mechanism is to be applied and an outer surface defining a wall thickness. A reduced wall thickness is formed into the outer surface in a pattern to produce a discontinuity that interrupts the lengthwise coherence of vortex shedding of moving fluid from the outer surface when the cylindrical column is attached to the exterior of the cylindrical structure in the flowing fluid. The effect of VIV on the cylindrical structure is effectively reduced.
    Type: Application
    Filed: March 14, 2001
    Publication date: November 14, 2002
    Inventors: Qi Xu, Tao Qi, Jeffery C. Measamer
  • Patent number: 6420571
    Abstract: The present invention relates to methods for preparing 2,2-dimethyl-5-acyloxy -10-propyl-2H,8H-benzo[1,2-b:3,4-b′]dipyran-8-one (5) and 2,2-dimethyl-5-hydroxy-10 -propyl-2H,8H-benzo[1,2-b:3,4-b′]dipyran-8-one (6) and their use as intermediates for the synthesis of antiviral calanolide compounds. For example, Fries rearrangement on compound 5 or Friedel-Crafts reaction on 6, yields intermediate 2,2-dimethyl-5-hydroxy -6-propionyl-10-propyl-2H,8H-benzo[1,2-b:3,4-b′]dipyran-8-one (4), which, in turn, can be converted to (+)-calanolide A and (−)-calanolide B. The coupling of compound 6 with the appropriate chiral molecule under Mitsunobu or nucleophilic displacement leads to the asymmetric synthesis of antiviral calanolide compounds.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: July 16, 2002
    Assignee: Sarawak MediChem Pharmaceuticals, Inc.
    Inventors: Ze-Qi Xu, Hongwei Yuan, Jennifer Crabb, Raghu Samy, Ailing Li, Hua Cao
  • Publication number: 20020070961
    Abstract: A system and method for navigating between hyperlinks and frames on a Web page within a Web browser in a client system in communication with one or more server systems. A plurality of hyperlinks and frames are displayed on a display of a user device via the Web browser, with each hyperlink and frame representing information about their location stored in one of the server systems. A user input entered from a remote input device is received by the client system. Based on the user input, a determination is made of which one of the hyperlinks or frames is to be marked as the active frame or link, and that hyperlink or frame is then marked. An indicator is then displayed on the display device indicating to the user that the selected hyperlink or frame has been made active.
    Type: Application
    Filed: November 29, 2001
    Publication date: June 13, 2002
    Inventors: Qi Xu, Mark Tom
  • Publication number: 20020052352
    Abstract: A composition and method of preventing or inhibiting tumor growth and, more particularly, of treating a malignant tumor, using prodrugs of plant-derived compounds and derivatives is disclosed. In the method, a composition containing betulinic acid or a betulinic acid derivative is administered in a prodrug form to release betulinic acid or a betulinic acid derivative in vivo at the tumor site.
    Type: Application
    Filed: August 15, 2001
    Publication date: May 2, 2002
    Inventors: John M. Pezzuto, Jerome W. Kosmeder, Ze-Qi Xu, Nian En Zhou, Miriam Elaine Goldsmith
  • Patent number: 6369241
    Abstract: The present invention relates to methods for preparing 2,2-dimethyl-5-acyloxy-10-propyl-2H,8H-benzo[1,2-b:3,4-b′]dipyran-8-one (5) and 2,2-dimethyl-5-hydroxy-10-propyl-2H,8H-benzo[1,2-b:3,4-b′]dipyran-8-one (6) and their use as intermediates for the synthesis of antiviral calanolide compounds. For example, Fries rearrangement on compound 5 or Friedel-Crafts reaction on 6, yields intermediate 2,2-dimethyl-5-hydroxy-6-propionyl-10-propyl-2H,8H-benzo[1,2-b:3,4-b′]dipyran-8-one (4), which, in turn, can be converted to (+)-calanolide A and (−)-calanolide B. The coupling of compound 6 with the appropriate chiral molecule under Mitsunobu or nucleophilic displacement leads to the asymmetric synthesis of antiviral calanolide compounds.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: April 9, 2002
    Assignee: Sarawak Medichem Pharmaceuticals, Inc.
    Inventors: Ze-Qi Xu, Hongwei Yuan, Jennifer Crabb, Raghu Samy, Ailing Li, Hua Cao
  • Publication number: 20020013478
    Abstract: Calanolide analogues that demonstrate potent antiviral activity against many viruses are provided. Also provided is a method of using calanolide analogues for treating or preventing viral infections. The calanolide analogues provided are obtained via syntheses employing chromene 4 and chromanone 7 as key intermediates.
    Type: Application
    Filed: March 21, 2001
    Publication date: January 31, 2002
    Applicant: Sarawak Medichem Pharmaceuticals,Inc.
    Inventors: Ze-Qi Xu, Michael T. Flavin, David Zembower
  • Publication number: 20020013480
    Abstract: The present invention relates to methods for preparing 2,2-dimethyl-5-acyloxy-10-propyl-2H,8H-benzo[ 1,2-b:3,4-b ′]dipyran-8-one (5) and 2,2-dimethyl-5-hydroxy- 10-propyl-2H,8H-benzo[1,2-b:3,4-b ′]dipyran-8-one (6) and their use as intermediates for the synthesis of antiviral calanolide compounds. For example, Fries rearrangement on compound 5 or Friedel-Crafts reaction on 6, yields intermediate 2,2-dimethyl-5-hydroxy-6-propionyl-10-propyl-2H,8H-benzo[1,2-b:3,4-b′]dipyran-8-one (4), which, in turn, can be converted to (+)-calanolide A and (−)-calanolide B. The coupling of compound 6 with the appropriate chiral molecule under Mitsunobu or nucleophilic displacement leads to the asymmetric synthesis of antiviral calanolide compounds.
    Type: Application
    Filed: July 31, 2001
    Publication date: January 31, 2002
    Applicant: Sarawak Medichem Pharmaceuticals, Inc.
    Inventors: Ze-Qi Xu, Hongwei Yuan, Jennifer Crabb, Raghu Samy, Ailing Li, Hua Cao
  • Publication number: 20010027209
    Abstract: Calanolides and analogues thereof that demonstrate potent mycobacterium activity are provided. Also provided is a method of using calanolides and analogues thereof for treating or preventing mycobacterium infections. The calanolides and analogues thereof provided are obtained via syntheses employing chromene 4 and chromanone 7 as key intermediates.
    Type: Application
    Filed: December 11, 2000
    Publication date: October 4, 2001
    Applicant: Sarawak Medichem Pharmaceuticals, Inc.
    Inventors: Ze-Qi Xu, Yuh Meei Lin, Michael T. Flavin
  • Patent number: 6277879
    Abstract: Calanolide analogues that demonstrate potent antiviral activity against many viruses are provided. Also provided is a method of using calanolide analogues for treating or preventing viral infections. The calanolide analogues provided are obtained via syntheses employing chromene 4 and chromanone 7 as key intermediates.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: August 21, 2001
    Assignee: Sarawak Medichem Pharmaceuticals, Inc.
    Inventors: Ze-Qi Xu, Michael T. Flavin, David Zembower
  • Patent number: 6268393
    Abstract: Calanolides and analogues thereof that demonstrate potent mycobacterium activity are provided. Also provided is a method of using calanolides and analogues thereof for treating or preventing mycobacterium infections. The calanolides and analogues thereof provided are obtained via syntheses employing chromene 4 and chromanone 7 as key intermediates.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: July 31, 2001
    Assignee: Sarawak Medichem Pharmaceuticals
    Inventors: Ze-Qi Xu, Yuh Meei Lin, Michael T. Flavin