Patents Assigned to Enzon Pharmaceuticals
  • Publication number: 20100204261
    Abstract: A four arm-polyethylene glycol-7-ethyl-10-hydroxycamptothecin conjugate, such as, is disclosed. Methods of making the conjugates and methods of treating mammals using the same are also disclosed.
    Type: Application
    Filed: April 19, 2010
    Publication date: August 12, 2010
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: Hong ZHAO, Maria Belen RUBIO, Dechun WU, Puja Sapra
  • Publication number: 20100160365
    Abstract: The present invention relates to methods of treatment of non-Hodgkin's lymphomas. The present invention includes administering polymeric prodrugs of 7-ethyl-10-hydroxycamptothecin to patients in need thereof.
    Type: Application
    Filed: January 18, 2010
    Publication date: June 24, 2010
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventor: Puja SAPRA
  • Patent number: 7723351
    Abstract: A four arm-polyethylene glycol-7-ethyl-10-hydroxycamptothecin conjugate, such as, is disclosed. Methods of making the conjugates and methods of treating mammals using the same are also disclosed.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: May 25, 2010
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventors: Hong Zhao, Maria Belen Rubio, Dechun Wu, Puja Sapra
  • Publication number: 20100093839
    Abstract: Oligonucleotides directed against the hypoxia-inducible factor-1? (HIP-1?) gene are provided for modulating the expression of HIF-1?. The compositions comprise oligonucleotides, particularly antisense oligonucleotides, targeted to nucleic acids encoding the HIF-1?. Methods of using these compounds for modulation of HIF-1? expression and for the treatment of diseases associated with the hypoxia-inducible factor-1? are provided. Examples of diseases are cancer and pre-eclampsia. The oligonucleotides may be composed of deoxyribonucleosides, a nucleic acid analogue, or Locked Nucleic Acid (LNA) or a combination thereof.
    Type: Application
    Filed: October 15, 2009
    Publication date: April 15, 2010
    Applicants: Enzon Pharmaceuticals, Inc., Santaris Pharma A/S
    Inventors: Charlotte Albaek Thrue, Anja Molhart Hog, Paul E.G. Kristjansen
  • Publication number: 20100056555
    Abstract: New methods of treating Ras associated cancer, and especially for treating cancer that is resistant or refractory to other treatment methods, including resistant or refractory to treatment with C225 and/or CPT-11, are provided. The new methods employ PEG-conjugated 7-ethyl-10-hydroxycampothecin, alone, or in combination with other art-known anticancer agents or modalities.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 4, 2010
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: Ivan HORAK, Puja SAPRA
  • Publication number: 20100056543
    Abstract: Improved posaconazole-based compositions and methods of treating and preventing fungal infections, cancer or metastatic diseases are disclosed. In preferred aspects, the conjugates are PEG-posaconazole conjugates in which the PEG has a molecular weight of about 20,000 daltons.
    Type: Application
    Filed: November 13, 2009
    Publication date: March 4, 2010
    Applicant: Enzon Pharmaceuticals, Inc.
    Inventor: Hong ZHAO
  • Patent number: 7671067
    Abstract: The present invention relates to methods of treatment of non-Hodgkin's lymphomas. The present invention includes administering polymeric prodrugs of 7-ethyl-10-hydroxy-camptothecin to patients in need thereof.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: March 2, 2010
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventor: Puja Sapra
  • Patent number: 7642072
    Abstract: A new nucleic acid molecule that is codon-optimized to expressbeta interferon in Escherichia coli with greater efficacy.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: January 5, 2010
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventors: David Ray Filpula, Amartya Basu
  • Publication number: 20090318538
    Abstract: Polymer conjugates containing nucleotides and/or oligonucleotides are disclosed.
    Type: Application
    Filed: August 20, 2009
    Publication date: December 24, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: Hong ZHAO, Richard B. GREENWALD, Susan L. ADLER
  • Patent number: 7625898
    Abstract: Improved posaconazole-based compositions and methods of treating and preventing fungal infections, cancer or metastatic diseases are disclosed. In preferred aspects, the conjugates are PEG-posaconazole conjugates in which the PEG has a molecular weight of about 20,000 daltons.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: December 1, 2009
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventor: Hong Zhao
  • Publication number: 20090286859
    Abstract: The present disclosure relates to an LNA oligonucleotide consisting of a sequence selected from the group consisting of 5?-(Tx)GxGxcsasasgscsastscscsTxGxT-3? and 5-(Gx)TxTxascstsgscscststscsTxTxA-3?, wherein capital letters designate a beta-D-oxy-LNA nucleotide analogue, small letters designate a 2-deoxynucleotide, underline designates either a beta-D-oxy-LNA nucleotide analogue or a 2-deoxynucleotide, subscript ā€œsā€ designates a phosphorothioate link between neighbouring nucleotides/LNA nucleotide analogues, and subscript ā€œxā€ designates either a phosphorothioate link or a phosphorodiester link between neighbouring nucleotides/LNA nucleotide analogues, and wherein the sequence is optionally extended by up to five 2-deoxynucleotide units. The LNA oligonucleotides are useful for modulating the expression of hypoxia-inducible factor-1a (HIF-1a), e.g. in the treatment of cancer diseases, inhibiting angiogenesis, inducing apoptosis, preventing cellular proliferation, or treating an angiogenic disease, e.g.
    Type: Application
    Filed: June 3, 2009
    Publication date: November 19, 2009
    Applicants: Enzon Pharmaceuticals, Inc., Santaris Pharma A/S
    Inventors: Majken Westergaard, Charlotte A. Thrue, Frank W. Rasmussen, Henrik F. Hansen
  • Patent number: 7601798
    Abstract: The present invention is directed to methods of preparing linear polymers such as polyalkylene oxides containing a terminal amine in high purity. One preferred method includes reacting a polyalkylene oxide such as polyethylene glycol containing a terminal tosylate with a protected amine salt to form a polymer containing a terminal protected amine and thereafter deprotecting the polymer containing the terminal protected amine to form the polymer having a terminal amine. The resultant polymer-amines are of sufficient purity so that expensive and time consuming purification steps required for pharmaceutical grade polymers are avoided.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: October 13, 2009
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventors: Hong Zhao, Belen Rubio
  • Patent number: 7595304
    Abstract: Polymer conjugates containing nucleotides and/or oligonucleotides are disclosed.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: September 29, 2009
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventors: Hong Zhao, Richard B. Greenwald
  • Publication number: 20090232833
    Abstract: The present invention provides polymeric delivery systems including hindered ester moieties. Methods of making the polymeric delivery systems and methods of treating mammals using the same are also disclosed.
    Type: Application
    Filed: March 12, 2009
    Publication date: September 17, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventor: Hong ZHAO
  • Patent number: 7584675
    Abstract: Connector which provide conduits between a sealed environment and an exterior of the environment includes a housing, a plurality of internal conduits extending from a first side of the housing, each adapted to communicate with a respective sampling device situated in the sealed environment, and a single external conduit extending from a second side of the housing opposite the first side and adapted to communicate with a measurement device exterior of the sealed environment. The housing is constructed to enable each internal conduits to alternatingly align with the external conduit such that each sampling device is able to communicate with the measurement device. By providing a connector which is able to provide a flow passage between multiple sampling devices and a single measurement device, at different times, it is not necessary to enter the sealed environment in order to configure a single sampling device in communication with the measurement device.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: September 8, 2009
    Assignee: Enzon Pharmaceuticals
    Inventor: Roy L. Evans
  • Publication number: 20090221471
    Abstract: Vancomycin-polymer conjugates are disclosed. In preferred aspects, polymer residues which are hydrolysis resistant in vitro, are selectively attached to the sugar amino and/or N-methyl amino groups of vancomycin and related compounds. Vancomycin-polymer conjugates made by the methods and methods of treatment using the conjugates are also disclosed.
    Type: Application
    Filed: November 21, 2008
    Publication date: September 3, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: Richard B. Greenwald, Hong Zhao
  • Publication number: 20090214472
    Abstract: Biologically-active, interferon-beta 1b-polymer conjugate compositions are disclosed. The polymer portion is preferably a polyalkylene oxide polymer having a molecular weight of at least about 12 kDa. Methods of making and using the same are also disclosed.
    Type: Application
    Filed: February 28, 2005
    Publication date: August 27, 2009
    Applicant: ENZON PHARMACEUTICALS INC.
    Inventors: David Ray Filpula, Karen Yang, Amartya Basu, Maoliang Wang
  • Publication number: 20090202573
    Abstract: The present invention provides polymeric conjugates containing positively charged moieties. Methods of making the polymeric delivery systems and methods of treating mammals using the same are also disclosed.
    Type: Application
    Filed: March 12, 2009
    Publication date: August 13, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: Hong ZHAO, Prasanna REDDY, Ivan HORAK, Jing XIA
  • Publication number: 20090203706
    Abstract: The present invention provides polymeric linkers containing branching moieties. Methods of making the polymeric linkers and methods of making conjugates using the same are also disclosed.
    Type: Application
    Filed: March 12, 2009
    Publication date: August 13, 2009
    Applicant: ENZON PHARMACEUTICALS, INC.
    Inventors: Hong Zhao, Prasanna Reddy
  • Patent number: 7569657
    Abstract: The present invention is directed to methods of preparing linear polymers such as polyalkylene oxides containing a terminal amine in high purity. One preferred method includes reacting a polyalkylene oxide such as polyethylene glycol containing a terminal tosylate with a protected amine salt to form a polymer containing a terminal protected amine and thereafter deprotecting the polymer containing the terminal protected amine to form the polymer having a terminal amine. The resultant polymer-amines are of sufficient purity so that expensive and time consuming purification steps required for pharmaceutical grade polymers are avoided.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: August 4, 2009
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventors: Hong Zhao, Belen Rubio