Patents by Inventor Xun Zhang

Xun Zhang 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: 7094505
    Abstract: A photomask assembly and method for protecting the photomask assembly from contaminants generated during a lithography process are disclosed. A photomask assembly includes a pellicle assembly formed from a pellicle frame and a pellicle film coupled to a first surface of the pellicle frame. The pellicle frame further includes an inner wall and an outer wall. A photomask is coupled to a second surface of the pellicle frame opposite the pellicle film. A molecular sieve that prevents airborne molecular contaminants (AMCs) generated during a lithography process from contaminating the photomask is associated with the pellicle assembly.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: August 22, 2006
    Assignee: Toppan Photomasks, Inc.
    Inventors: Xun Zhang, Joseph Stephen Gordon, Janice M. Paduano, Xiaoming Chen, Julio R. Reyes
  • Patent number: 6939544
    Abstract: Disclosed are isolated antibodies that specifically bind a murine pituitary tumor transforming gene carboxy-terminal (PTTG-C) peptide. The inventive antibodies are useful in assays to determine levels of PTTG proteins or PTTG-C peptides present in a given sample (e.g., tissue samples, biological fluids, Western blots). The antibodies can also be used to purify PTTG proteins or PTTG-C peptides from crude cell extracts and the like. The antibodies are also considered therapeutically useful to counteract and/or supplement the biological effect of PTTG proteins in vivo.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: September 6, 2005
    Assignee: Cedars-Sinai Medical Center
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Patent number: 6894031
    Abstract: Disclosed is a method of inhibiting neoplastic cellular proliferation and/or transformation of mammalian cells, including cells of human origin, in vitro or in vivo. The inventive method involves the use of a pituitary tumor transforming gene carboxy-terminal peptide (PTTG-C), which has the ability to regulate endogenous pituitary, tumor transforming gene (PTTG) expression and/or function in a dominant negative manner. In some embodiments, the invention is directed to gene-based treatments that deliver PTTG-C-related polynucleotides to mammalian cells, whether in vitro or in vivo, to inhibit the endogenous expression of PTTG. Other embodiments are directed to peptide-based treatments that deliver PTTG-C peptide molecules to the cells, which inhibit endogenous PTTG expression and/or PTTG function. Additional embodiments directed to a method of inhibiting tumor angiogenesis, in vivo, are also disclosed.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: May 17, 2005
    Assignee: Cedars-Sinai Medical Center
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Patent number: 6858586
    Abstract: Disclosed is a method of inhibiting neoplastic cellular proliferation and/or transformation of mammalian cells, including cells of human origin, in vitro or in vivo. The inventive method involves the use of a composition containing a pituitary tumor transforming gene carboxy-terminal peptide (PTTG-C), which can be comprised in a chimeric protein, which has the ability to regulate endogenous pituitary tumor transforming gene (PTTG) expression and/or function in a dominant negative manner. Kits comprising the inventive compositions are also disclosed for the treatment of neoplastic cellular proliferation in vitro or in vivo. Isolated PTTG-C peptides and PTTG-C-containing chimeric proteins are described.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: February 22, 2005
    Assignee: Cedars-Sinai Medical Center
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Patent number: 6835380
    Abstract: Disclosed are isolated antibodies that specifically bind a rat pituitary tumor transforming gene carboxy-terminal peptide (PTTG-C). These antibodies are believed to be particularly useful in connection with methods for inhibiting the neoplastic cellular proliferation and/or transformation of mammalian cells, including cells of human origin, whether in vivo or in vitro. This is based on the discovery that PTTG-C molecules have the ability to downregulate pituitary tumor transforming gene (PTTG) expression and/or PTTG function in a dominant negative manner.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: December 28, 2004
    Assignee: Cedars-Sinai Medical Center
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Publication number: 20040137339
    Abstract: A photomask assembly and method for protecting the photomask assembly from contaminants generated during a lithography process are disclosed. A photomask assembly includes a pellicle assembly formed from a pellicle frame and a pellicle film coupled to a first surface of the pellicle frame. The pellicle frame further includes an inner wall and an outer wall. A photomask is coupled to a second surface of the pellicle frame opposite the pellicle film. A molecular sieve that prevents airborne molecular contaminants (AMCs) generated during a lithography process from contaminating the photomask is associated with the pellicle assembly.
    Type: Application
    Filed: October 29, 2003
    Publication date: July 15, 2004
    Applicant: DuPont Photomasks, Inc.
    Inventors: Xun Zhang, Joseph Stephen Gordon, Janice M. Paduano, Xiaoming Chen, Julio R. Reyes
  • Publication number: 20040131551
    Abstract: Metal chelates capable of exhibiting an immobilized relativity between about 60 and 200 mM−1s−1/metal atom are useful as magnetic resonance imaging agents.
    Type: Application
    Filed: December 19, 2003
    Publication date: July 8, 2004
    Inventors: Ramachandran S. Ranganathan, Radhakrishna Pillai, Peter C. Ratsep, Rajesh Shukla, Michael F. Tweedle, Xun Zhang
  • Patent number: 6693190
    Abstract: Metal chelates capable of exhibiting an immobilized relativity between about 60 and 200 mM−1s−1/metal atom are useful as magnetic resonance imaging agents. Additionally, a compound which is useful as a metal-chelating ligand has the following formula: wherein Q is a 4- to an 8-membered carbocyclic ring which may be fully or partially saturated; t is an integer from 2 to 16; each R group is independently hydrogen, —OH, —CH2—A, —OCH2CH(OH)CH2—A or a functional group capable of forming a conjugate with a biomolecule, provided that at least two of the R groups are selected from —CH2—A or —OCH2CH(OH)CH2—A; and A is a moiety capable of chelating a metal atom.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: February 17, 2004
    Assignee: Bracco International B.V.
    Inventors: Ramachandran S. Ranganathan, Radhakrishna Pillai, Peter C. Ratsep, Rajesh Shukla, Michael F. Tweedle, Xun Zhang
  • Publication number: 20030186910
    Abstract: Disclosed is a method of inhibiting neoplastic cellular proliferation and/or transformation of mammalian cells, including cells of human origin, in vitro or in vivo. The inventive method involves the use of a composition containing a polynucleotide encoding a pituitary tumor transforming gene carboxy-terminal peptide (PTTG-C), which has the ability to regulate endogenous pituitary tumor transforming gene (PTTG) expression and/or function in a dominant negative manner. Kits comprising the inventive compositions are also disclosed for the treatment of neoplastic cellular proliferation in vitro or in vivo. Isolated polynucloetides encoding PTTG-C peptides.
    Type: Application
    Filed: October 29, 2002
    Publication date: October 2, 2003
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Publication number: 20030175266
    Abstract: Disclosed are isolated antibodies that specifically bind a human pituitary tumor transforming gene carboxy-terminal peptide (PTTG-C).
    Type: Application
    Filed: April 29, 2002
    Publication date: September 18, 2003
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Publication number: 20030153522
    Abstract: Disclosed is a method of inhibiting neoplastic cellular proliferation and/or transformation of mammalian cells, including cells of human origin, in vitro or in vivo. The inventive method involves the use of a composition containing a pituitary tumor transforming gene carboxy-terminal peptide (PTTG-C), which can be comprised in a chimeric protein, which has the ability to regulate endogenous pituitary tumor transforming gene (PTTG) expression and/or function in a dominant negative manner. Kits comprising the inventive compositions are also disclosed for the treatment of neoplastic cellular proliferation in vitro or in vivo. Isolated PTTG-C peptides and PTTG-C-containing chimeric proteins are described.
    Type: Application
    Filed: September 30, 2002
    Publication date: August 14, 2003
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Publication number: 20030152573
    Abstract: Disclosed are isolated antibodies that specifically bind a murine pituitary tumor transforming gene carboxy-terminal peptide (PTTG-C).
    Type: Application
    Filed: September 30, 2002
    Publication date: August 14, 2003
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Publication number: 20030147892
    Abstract: Disclosed are isolated antibodies that specifically bind a rat pituitary tumor transforming gene carboxy-terminal peptide (PTTG-C).
    Type: Application
    Filed: September 30, 2002
    Publication date: August 7, 2003
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Publication number: 20030148977
    Abstract: Disclosed is a method of inhibiting neoplastic cellular proliferation and/or transformation of mammalian cells, including cells of human origin, in vitro or in vivo. The inventive method involves the delivery of polynucleotides antisense to PTTG-C-related polynucleotides to mammalian cells, whether in vitro or in vivo, to inhibit the endogenous expression of PTTG. Also disclosed are compositions comprising antisense PTTG carboxy-terminal-related polynucleotides, including compositions comprising expression vectors containing the PTTG-C-related polynucleotides. Kits comprising the inventive compositions are also disclosed for the treatment of neoplastic cellular proliferation in vitro or in vivo.
    Type: Application
    Filed: September 30, 2002
    Publication date: August 7, 2003
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Publication number: 20030148978
    Abstract: Disclosed is a method of inhibiting neoplastic cellular proliferation and/or transformation of mammalian cells, including cells of human origin, in vitro or in vivo. The inventive method involves the delivery of polynucleotides antisense to PTTG-C-related polynucleotides to mammalian cells, whether in vitro or in vivo, to inhibit the endogenous expression of PTTG. Also disclosed are compositions comprising antisense PTTG carboxy-terminal-related polynucleotides, including compositions comprising expression vectors containing the PTTG-C-related polynucleotides.
    Type: Application
    Filed: September 30, 2002
    Publication date: August 7, 2003
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Publication number: 20030140359
    Abstract: Disclosed is a non-human mammal comprising a cell that comprises an expression vector containing a promoter and a PTTG carboxy-terminal-related DNA.
    Type: Application
    Filed: October 29, 2002
    Publication date: July 24, 2003
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Publication number: 20030130219
    Abstract: Disclosed is a method of inhibiting neoplastic cellular proliferation and/or transformation of mammalian cells, including cells of human origin, in vitro or in vivo. The inventive method involves the use of a composition containing a polynucleotide encoding a pituitary tumor transforming gene carboxy-terminal peptide (PTTG-C), which has the ability to regulate endogenous pituitary tumor transforming gene (PTTG) expression and/or function in a dominant negative manner. Kits comprising the inventive compositions are also disclosed for the treatment of neoplastic cellular proliferation in vitro or in vivo. Isolated polynucloetides encoding PTTG-C peptides.
    Type: Application
    Filed: October 29, 2002
    Publication date: July 10, 2003
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Publication number: 20030131366
    Abstract: Disclosed is a non-human mammal comprising a cell that comprises an expression vector containing a promoter and a PTTG carboxy-terminal-related DNA.
    Type: Application
    Filed: October 29, 2002
    Publication date: July 10, 2003
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Publication number: 20030114378
    Abstract: Disclosed is a method of inhibiting neoplastic cellular proliferation and/or transformation of mammalian cells, including cells of human origin, in vitro or in vivo. The inventive method involves the use of a composition containing a pituitary tumor transforming gene carboxy-terminal peptide (PTTG-C), which can be comprised in a chimeric protein, which has the ability to regulate endogenous pituitary tumor transforming gene (PTTG) expression and/or function in a dominant negative manner. Kits comprising the inventive compositions are also disclosed for the treatment of neoplastic cellular proliferation in vitro or in vivo. Isolated PTTG-C peptides and PTTG-C-containing chimeric proteins are described.
    Type: Application
    Filed: September 30, 2002
    Publication date: June 19, 2003
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed
  • Publication number: 20030079242
    Abstract: Disclosed is a non-human mammal comprising a cell that comprises an expression vector containing a promoter and a PTTG carboxy-terminal-related DNA
    Type: Application
    Filed: April 29, 2002
    Publication date: April 24, 2003
    Inventors: Gregory A. Horwitz, Xun Zhang, Shlomo Melmed