Patents by Inventor David W. Leung

David W. Leung 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: 20100189726
    Abstract: The invention relates to triazines and the use thereof to inhibit lysophosphatidic acid acyltransferase ? (LPAAT-?) activity. The invention further relates to methods of treating cancer using said triazines. The invention also relates to methods for screening for LPAAT-? activity.
    Type: Application
    Filed: September 29, 2009
    Publication date: July 29, 2010
    Applicant: Cell Therapeutics, Inc.
    Inventors: Lynn BONHAM, J. Peter Klein, Robert E. Finney, David M. Hollenback, Scott A. Shaffer, Norina M. Tang, Thayer H. White, David W. Leung, Baoqing Gong, John Tulinsky
  • Patent number: 7608620
    Abstract: The invention relates to triazines and the use thereof to inhibit lysophosphatidic acid acyltransferase ? (LPAAT-?) activity. The invention further relates to methods of treating cancer using said triazines. The invention also relates to methods for screening for LPAAT-? activity.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: October 27, 2009
    Assignee: Cell Therapeutics, Inc.
    Inventors: Lynn Bonham, Baoqing Gong, Robert E Finney, David M Hollenback, J Peter Klein, David W Leung, Scott A Shaffer, Norina M Tang, John Tulinsky, Thayer H White
  • Publication number: 20080176288
    Abstract: A polyanionic polymer can improve the bioactivity and water-solubility properties of a drug to which it is joined. The inventive method provides a monodispersed preparation of a recombinantly-produced polyanionic polymer that can be easily manipulated, such as lengthened. An active moiety may be chemically or recombinantly joined to a polyanionic polymer to increase its biological half-life and/or solubility. The instant invention also provides a method for targeting the delivery of a polyanionic polymer conjugate or fusion protein to a specific cell type or tissue.
    Type: Application
    Filed: October 30, 2007
    Publication date: July 24, 2008
    Inventors: David W. Leung, Philip A. Bergman, Alan Lofquist, Gregory E. Pietz, Christopher K. Tompkins, David W. Waggoner
  • Patent number: 7199238
    Abstract: The invention relates to triazines and the use thereof to inhibit lysophosphatidic acid acyltransferase ? (LPAAT-?) activity. The invention further relates to methods of treating cancer using said triazines. The invention also relates to methods for screening for LPAAT-? activity.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: April 3, 2007
    Assignee: Cell Therapuetics, Inc.
    Inventors: Lynn Bonham, Baoqing Gong, Robert E Finney, David M Hollenback, J. Peter Klein, David W Leung, Scott A Shaffer, Norina M Tang, John Tulinsky, Thayer H White
  • Patent number: 7135314
    Abstract: This invention relates to a biotechnology invention concerning human phosphatidic acid phosphatase. More particularly, this invention relates to three variants of human phosphatidic acid phosphatase namely PAP-?(1 and 2), PAP-? and PAP-? and uses thereof.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: November 14, 2006
    Assignee: Cell Therapeutics, Inc.
    Inventors: David W. Leung, Christopher K. Tompkins
  • Patent number: 7064125
    Abstract: The invention relates to triazines and the use thereof to inhibit lysophosphatidic acid acyltransferase ? (LPAAT-?) activity. The invention further relates to methods of treating cancer using said triazines. The invention also relates to methods for screening for LPAAT-? activity.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: June 20, 2006
    Assignee: Cell Therapeutics, Inc.
    Inventors: Baoqing Gong, John Tulinsky, Lynn Bonham, J. Peter Klein, Robert E. Finney, David M. Hollenback, Scott A. Shaffer, Norina M. Tang, Thayer H. White, David W. Leung
  • Patent number: 7052891
    Abstract: Polypeptides are obtained, for example, via expression of encoding cDNA sequences, that have the activity of the enzyme lysophosphatidic acid acyltransferase (LPAAT), also known as 1-acyl sn-glycerol-3-phosphate acyltransferase.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: May 30, 2006
    Assignee: Cell Therapeutics Inc.
    Inventors: David W. Leung, Daniel Adourel, David Hollenback
  • Patent number: 7045327
    Abstract: Polypeptides are obtained, for example, via expression of encoding cDNA sequences, that have the activity of the enzyme lysophosphatidic acid acyltransferase (LPAAT), also known as 1-acyl sn-glycerol-3-phosphate acyltransferase.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: May 16, 2006
    Assignee: Cell Therapeutics Inc.
    Inventors: David W. Leung, Daniel Adourel, David Hollenback
  • Patent number: 6973419
    Abstract: A method and system for designing an impingement film floatwall panel system for a combustion chamber for a gas turbine engine comprising the steps of creating an impingement film floatwall panel knowledge base of information. The knowledge base has a plurality of design rule signals with respect to a corresponding plurality of parameter signals of associated elements of impingement film floatwall panels for a combustion chamber, wherein the knowledge base comprises at least one data value signal for each one of the plurality of design rule signals. The steps also include entering a desired data value signal for a selected one of the plurality of parameter signals of an associated element of the impingement film floatwall panels and comparing the entered desired data value signal for the selected one of the plurality of parameters with the corresponding at least one data value signal in the knowledge base for the corresponding one of the plurality of design rule signals.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: December 6, 2005
    Assignee: United Technologies Corporation
    Inventors: Thomas B. Fortin, Gregory E. Chetta, David W. Leung, Duncan C. Meyers, Keith C. Belson, John V. Diaz, Thomas E. Holladay, Scott A. Ladd, Randall G. McKinney, Sergio Rinella, Andreas Sadil, George F. Titterton, III
  • Patent number: 6944580
    Abstract: A method for designing an engine case static structure of a gas turbine engine includes creating signals representing an engine case static structure knowledge base of information. The knowledge base has a plurality of design rule signals with respect to a corresponding plurality of parameter signals of associated elements of an engine case static structure, wherein the knowledge base comprises at least one data value signal for each of the plurality of design rule signals. A desired data value signal is entered for a selected one of the plurality of parameter signals of an associated element of the engine case static structure and compared to the corresponding data value signal in the knowledge base for the corresponding one of the plurality of design rule signals. Signals representative of a geometric representation of the selected parameter signal may be created.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: September 13, 2005
    Assignee: United Technologies Corporation
    Inventors: Karl Blume, Dennis L. Mackey, Amy U. Serwinowski, David W. Leung, Charlie Quackenbush, Jeffrey Simpson, Duncan C. Meyers, Frank Shurick, Henry Huizinga, Robert Rozelle, Gregory E. Chetta, Jonathan Schmid
  • Publication number: 20040162288
    Abstract: The invention relates to triazines and the use thereof to inhibit lysophosphatidic acid acyltransferase &bgr; (LPAAT-&bgr;) activity. The invention further relates to methods of treating cancer using said triazines. The invention also relates to methods for screening for LPAAT-&bgr; activity.
    Type: Application
    Filed: November 13, 2003
    Publication date: August 19, 2004
    Applicant: Cell Therapeutics, Inc.
    Inventors: Baoqing Gong, John Tulinsky, Lynn Bonham, J. Peter Klein, Robert E. Finney, David M. Hollenback, Scott A. Shaffer, Norina M. Tang, Thayer H. White, David W. Leung
  • Publication number: 20040086996
    Abstract: Polypeptides are obtained, for example, via expression of encoding cDNA sequences, that have the activity of the enzyme lysophosphatidic acid acyltransferase (LPAAT), also known as 1-acyl sn-glycerol-3-phosphate acyltransferase.
    Type: Application
    Filed: September 23, 2003
    Publication date: May 6, 2004
    Applicant: CELL THERAPEUTICS, INC.
    Inventors: David W. Leung, Daniel Adourel, David Hollenback
  • Publication number: 20040082049
    Abstract: Polypeptides are obtained, for example, via expression of encoding cDNA sequences, that have the activity of the enzyme lysophosphatidic acid acyltransferase (LPAAT), also known as 1-acyl sn-glycerol-3-phosphate acyltransferase.
    Type: Application
    Filed: September 23, 2003
    Publication date: April 29, 2004
    Applicant: CELL THERAPEUTICS, INC.
    Inventors: David W. Leung, Daniel Adourel, David Hollenback
  • Publication number: 20040043465
    Abstract: Polypeptides are obtained, for example, via expression of encoding cDNA sequences, that have the activity of the enzyme lysophosphatidic acid acyltransferase (LPAAT), also known as 1-acyl sn-glycerol-3-phosphate acyltransferase.
    Type: Application
    Filed: September 23, 2003
    Publication date: March 4, 2004
    Applicant: CELL THERAPEUTICS, INC.
    Inventors: David W. Leung, Daniel Adourel, David Hollenback
  • Patent number: 6670143
    Abstract: Polypeptides are obtained, for example, via expression of encoding cDNA sequences, that have the activity of the enzyme lysophosphatidic acid acyltransferase (LPAAT), also known as 1-acyl sn-glycerol-3-phosphate acyltransferase.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: December 30, 2003
    Assignee: Cell Therapeutics, Inc.
    Inventors: David W. Leung, Daniel Adourel, David Hollenback
  • Patent number: 6503700
    Abstract: There is disclosed cDNA sequences and polypeptides having the enzyme CDP-diacylglycerol synthase (CDS) activity. CDS is also known as CTP:phosphatidate cytidylyltransferase. There is further disclosed methods for isolation and production of polypeptides involved in phosphatidic acid metabolism and signaling in mammalian cells, in particular, the production of purified forms of CDS.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: January 7, 2003
    Assignee: Cell Therapeutics, Inc.
    Inventor: David W. Leung
  • Publication number: 20020169125
    Abstract: A polyanionic polymer can improve the bioactivity and water-solubility properties of a drug to which it is joined. The inventive method provides a monodispersed preparation of a recombinantly-produced polyanionic polymer that can be easily manipulated, such as lengthened. An active moiety may be chemically or recombinantly joined to a polyanionic polymer to increase its biological half-life and/or solubility. The instant invention also provides a method for targeting the delivery of a polyanionic polymer conjugate or fusion protein to a specific cell type or tissue.
    Type: Application
    Filed: March 20, 2002
    Publication date: November 14, 2002
    Applicant: CELL THERAPEUTICS, INC.
    Inventors: David W. Leung, Philip A. Bergman, Alan Lofquist, Gregory E. Pietz, Christopher K. Tompkins, David W. Waggoner
  • Publication number: 20020168747
    Abstract: There is disclosed cDNA sequences and polypeptides having the enzyme CDP-diacylglycerol synthase (CDS) activity. CDS is also known as CTP:phosphatidate cytidylyltransferase. There is further disclosed methods for isolation and production of polypeptides involved in phosphatidic acid metabolism and signaling in mammalian cells, in particular, the production of purified forms of CDS.
    Type: Application
    Filed: May 2, 2002
    Publication date: November 14, 2002
    Applicant: CELL THERAPEUTICS, INC.
    Inventor: David W. Leung
  • Publication number: 20020156262
    Abstract: Polypeptides are obtained, for example, via expression of encoding cDNA sequences, that have the activity of the enzyme lysophosphatidic acid acyltransferase (LPAAT), also known as 1-acyl sn-glycerol-3-phosphate acyltransferase.
    Type: Application
    Filed: October 5, 2001
    Publication date: October 24, 2002
    Inventors: David W. Leung, Daniel Adourel, David Hollenback
  • Publication number: 20020107269
    Abstract: The invention relates to benzoxazoles and the use thereof to inhibit lysophosphatidic acid acyltransferase &bgr; (LPAAT-&bgr;) activity. The invention further relates to methods of treating cancer using said benzoxazoles. The invention also relates to methods for screening for LPAAT-&bgr; activity.
    Type: Application
    Filed: October 31, 2001
    Publication date: August 8, 2002
    Applicant: CELL THERAPEUTICS, INC.
    Inventors: Lynn Bonham, J. Peter Klein, Robert E. Finney, David M. Hollenback, Scott A. Shaffer, Norina M. Tang, Thayer H. White, David W. Leung