Patents by Inventor Walter Szarek

Walter Szarek 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: 20140155445
    Abstract: Disclosed are compounds of the general formula (I): compositions comprising an effective amount of said compounds either alone or in combination with other chemotherapeutic agents, and methods useful for treating or preventing cancer and for inhibiting tumour tissue growth. These compounds attenuate the oxidative damage associated with increased heme-oxygenase activity and can reduce cell proliferation in transformed cells. In addition, the described compounds and compositions are useful as neuroprotectants and for treating or preventing neurodegenerative disorders and other diseases of the central nervous system.
    Type: Application
    Filed: September 18, 2013
    Publication date: June 5, 2014
    Applicants: QUEEN'S UNIVERSITY AT KINGSTON, Osta Biotechnologies Inc., The Sir Mortimer B. Davis - Jewish General Hospital
    Inventors: Ajay Gupta, Hyman M. Schipper, Moulay Alaoui-Jamali, Walter A. Szarek, Kanji Nakatsu, Jason Z. Vlahakis
  • Patent number: 8632914
    Abstract: The present disclosure relates to certain new and known triazolium and/or imidazolium salts and to their therapeutic use, for example in methods of treating or preventing an infection by a Plasmodium or Babesia parasite in a subject in need thereof. The triazolium and imidazolium salts are compounds of the Formula (I) or (II): wherein R1-R4, R1?-R3?, R8-R11, X, X?, X?, Y, Y? and Y? are as defined in the disclosure.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: January 21, 2014
    Assignee: University Health Network
    Inventors: Ian E. Crandall, Walter A. Szarek, Jason Z. Vlahakis
  • Patent number: 8513294
    Abstract: Disclosed are compounds of the general formula (I): compositions comprising an effective amount of said compounds either alone or in combination with other chemotherapeutic agents, and methods useful for treating or preventing cancer and for inhibiting tumor tissue growth. These compounds attenuate the oxidative damage associated with increased heme-oxygenase activity and can reduce cell proliferation in transformed cells. In addition, the described compounds and compositions are useful as neuroprotectants and for treating or preventing neurodegenerative disorders and other diseases of the central nervous system.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: August 20, 2013
    Assignees: Osta Biotechnologies, Queens University at Kingston, The Sir Mortimer B. Davis-Jewish General Hospital
    Inventors: Ajay Gupta, Hyman M. Schipper, Moulay Alaoui-Jamali, Walter A. Szarek, Kanji Nakatsu, Jason Z. Vlahakis
  • Publication number: 20120020915
    Abstract: Disclosed are compounds of the general formula (I): compositions comprising an effective amount of said compounds either alone or in combination with other chemotherapeutic agents, and methods useful for treating or preventing cancer and for inhibiting tumour tissue growth. These compounds attenuate the oxidative damage associated with increased heme-oxygenase activity and can reduce cell proliferation in transformed cells. In addition, the described compounds and compositions are useful as neuroprotectants and for treating or preventing neurodegenerative disorders and other diseases of the central nervous system.
    Type: Application
    Filed: January 13, 2011
    Publication date: January 26, 2012
    Applicants: QUEENS UNIVERSITY AT KINGSTON, THE SIR MORTIMER B. DAVIS JEWISH GENERAL HOSPITAL, OSTA BIOTECHNOLOGIES, INC.
    Inventors: Ajay Gupta, Hyman M. Schipper, Moulay Alaoui-Jamali, Walter A. Szarek, Kanji Nakatsu, Jason Z. Vlahakis
  • Publication number: 20110319459
    Abstract: Disclosed are compounds of the general formula (I): T?C?nD??(I), compositions comprising an effective amount of said compounds either alone or in combination with other chemotherapeutic agents, and methods useful for treating or preventing cancer and for inhibiting tumour tissue growth. These compounds attenuate the oxidative damage associated with increased heme-oxygenase activity and can reduce cell proliferation in transformed cells. In addition, the described compounds and compositions are useful as neuroprotectants and for treating or preventing neurodegenerative disorders and other diseases of the central nervous system.
    Type: Application
    Filed: April 14, 2011
    Publication date: December 29, 2011
    Applicants: OSTA BIOTECHNOLOGIES, The Sir Mortimer B. Davis - Jewish General Hospita, QUEENS UNIVERSITY AT KINGSTON
    Inventors: Ajay Gupta, Hyman M. Schipper, Moulay Alaoui-Jamali, Walter A. Szarek, Kanji Nakatsu, Jason Z. Vlahakis
  • Publication number: 20110281951
    Abstract: Therapeutic compounds and methods for modulating amyloid aggregation in a subject, whatever its clinical setting, are described. Amyloid aggregation is modulated by the administration to a subject of an effective amount of a therapeutic compound of the formula or a pharmaceutically acceptable salt or ester, such that modulation of amyloid aggregation occurs. R1 and R2 are each independently a hydrogen atom or a substituted or unsubstituted aliphatic or aryl group. Z and Q are each independently a carbonyl (C?O), thiocarbonyl (C?S), sulfonyl (SO2), or sulfoxide (S?O) group. “k” and “m” are 0 or 1, provided when k is 1, R1 is not a hydrogen atom, and when m is 1, R2 is not a hydrogen atom. In an embodiment, at least one of k or m must equal 1. “p” and “s” are each independently positive integers selected such that the biodistribution of the therapeutic compound for an intended target site is not prevented while maintaining activity of the therapeutic compound.
    Type: Application
    Filed: April 14, 2011
    Publication date: November 17, 2011
    Inventors: Walter Szarek, Donald Weaver, Xianqi Kong, Heather Gordon
  • Publication number: 20110257235
    Abstract: The present disclosure relates to certain new and known triazolium and/or imidazolium salts and to their therapeutic use, for example in methods of treating or preventing an infection by a Plasmodium or Babesia parasite in a subject in need thereof. The triazolium and imidazolium salts are compounds of the Formula (I) or (II): wherein R1-R4, R1?-R3?, R8-R11, X, X?, X?, Y, Y? and Y? are as defined in the disclosure.
    Type: Application
    Filed: September 4, 2009
    Publication date: October 20, 2011
    Inventors: Ian E. Crandall, Walter A. Szarek, Jason Z. Vlahakis
  • Patent number: 7943650
    Abstract: Disclosed in certain embodiments is a method of treating and/or mitigating prostate cancer, ovarian cancer, melanoma, colorectal cancer, breast cancer or lung cancer, comprising administering to an individual in need thereof a pharmaceutical composition comprising a pharmaceutically acceptable carrier and a compound of formula (I): where T is optionally substituted phenyl; n is 1 to 6: C represents optionally substituted carbon; and D is imidazolyl; or a pharmaceutically acceptable salt or ester of said compound.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: May 17, 2011
    Assignees: Osta Biotechnologies, Queen's University at Kingston, The Sir Mortimer B. Davis-Jewish General Hospital
    Inventors: Ajay Gupta, Hyman M. Schipper, Moulay Alaoui-Jamali, Walter A. Szarek, Kanji Nakatsu, Jason Z. Vlahakis
  • Publication number: 20110002875
    Abstract: Therapeutic compounds and methods for inhibiting amyloid deposition in a subject, whatever its clinical setting, are described. Amyloid deposition is inhibited by the administration to a subject of an effective amount of a therapeutic compound comprising an anionic group and a carrier molecule, or a pharmaceutically acceptable salt thereof, such that an interaction between an amyloidogenic protein and a basement membrane constituent is inhibited. Preferred anionic groups are sulfonates and sulfates. Preferred carrier molecules include carbohydrates, polymers, peptides, peptide derivatives, aliphatic groups, alicyclic groups, heterocyclic groups, aromatic groups and combinations thereof.
    Type: Application
    Filed: June 8, 2010
    Publication date: January 6, 2011
    Applicant: Bellus Health (International) Limited
    Inventors: Robert Kisilevsky, Walter Szarek, Donald Weaver
  • Patent number: 7786174
    Abstract: Methods and compositions which are useful in the treatment of amyloidosis. In particular, methods and compositions are provided for inhibiting, preventing and treating amyloid deposition, e.g., in pancreatic islets, wherein the amyloidotic deposits are islet amyloid polypeptide (IAPP)-associated amyloid deposition or deposits. The methods of the invention involve administering to a subject a therapeutic compound which inhibits IAPP-associated amyloid deposits. Accordingly, the compositions and methods of the invention are useful for inhibiting IAPP-associated amyloidosis in disorders in which such amyloid deposition occurs, such as diabetes.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: August 31, 2010
    Assignee: Bellus Health (International) Limited
    Inventors: Walter A. Szarek, Donald F. Weaver, Xianqi Kong, Ajay Gupta, David Migneault
  • Publication number: 20100190753
    Abstract: Methods, compounds, pharmaceutical compositions and kits are described for treating or preventing amyloid-+related disease.
    Type: Application
    Filed: August 27, 2009
    Publication date: July 29, 2010
    Applicant: BELLUS Health (International) Limited
    Inventors: Xianqi KONG, Walter A. Szarek, Francine Gervais
  • Patent number: 7754761
    Abstract: Therapeutic compounds and methods for inhibiting amyloid deposition in a subject, whatever its clinical setting, are described. Amyloid deposition is inhibited by the administration to a subject of an effective amount of a therapeutic compound comprising an anionic group and a carrier molecule, or a pharmaceutically acceptable salt thereof, such that an interaction between an amyloidogenic protein and a basement membrane constituent is inhibited. Preferred anionic groups are sulfonates and sulfates. Preferred carrier molecules include carbohydrates, polymers, peptides, peptide derivatives, aliphatic groups, alicyclic groups, heterocyclic groups, aromatic groups and combinations thereof.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: July 13, 2010
    Assignee: Bellus Health (International) Limited
    Inventors: Robert Kisilevsky, Walter A. Szarek, Donald F. Weaver
  • Patent number: 7598269
    Abstract: Methods, compounds, pharmaceutical compositions and kits are described for treating or preventing amyloid-+related disease.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: October 6, 2009
    Assignee: Bellus Health (International) Limited
    Inventors: Xianqi Kong, Walter A. Szarek, Francine Gervais
  • Publication number: 20090176831
    Abstract: Disclosed are compounds of the general formula (I): compositions comprising an effective amount of said compounds either alone or in combination with other chemotherapeutic agents, and methods useful for treating or preventing cancer and for inhibiting tumour tissue growth. These compounds attenuate the oxidative damage associated with increased heme-oxygenase activity and can reduce cell proliferation in transformed cells. In addition, the described compounds and compositions are useful as neuroprotectants and for treating or preventing neurodegencrative disorders and other diseases of the central nervous system.
    Type: Application
    Filed: June 16, 2008
    Publication date: July 9, 2009
    Applicants: OSTA BIOTECHNOLOGIES, The Sir Mortimer B. Davis - Jewish General Hospital, Queen's University at Kingtson
    Inventors: Ajay Gupta, Hyman M. Schipper, Moulay Alaoui-Jamali, Walter A. Szarek, Kanji Nakatsu, Jason Z. Vlahakis
  • Publication number: 20090099100
    Abstract: Therapeutic compounds and methods for modulating amyloid aggregation in a subject, whatever its clinical setting, are described. Amyloid aggregation is modulated by the administration to a subject of an effective amount of a therapeutic compound of the formula or a pharmaceutically acceptable salt or ester, such that modulation of amyloid aggregation occurs. R1 and R2 are each independently a hydrogen atom or a substituted or unsubstituted aliphatic or aryl group. Z and Q are each independently a carbonyl (C?O), thiocarbonyl (C?S), sulfonyl (SO2), or sulfoxide (S?O) group. “k” and “m” are 0 or 1, provided when k is 1, R1 is not a hydrogen atom, and when m is 1, R2 is not a hydrogen atom. In an embodiment, at least one of k or m must equal 1. “p” and “s” are each independently positive integers selected such that the biodistribution of the therapeutic compound for an intended target site is not prevented while maintaining activity of the therapeutic compound.
    Type: Application
    Filed: July 7, 2008
    Publication date: April 16, 2009
    Applicant: Bellus Health (International) Limited
    Inventors: Walter Szarek, Donald Weaver, Xianqi Kong, Heather Gordon
  • Publication number: 20080227767
    Abstract: Methods and compositions which are useful in the treatment of amyloidosis. In particular, methods and compositions are provided for inhibiting, preventing and treating amyloid deposition, e.g., in pancreatic islets, wherein the amyloidotic deposits are islet amyloid polypeptide (IAPP)-associated amyloid deposition or deposits. The methods of the invention involve administering to a subject a therapeutic compound which inhibits IAPP-associated amyloid deposits. Accordingly, the compositions and methods of the invention are useful for inhibiting IAPP-associated amyloidosis in disorders in which such amyloid deposition occurs, such as diabetes.
    Type: Application
    Filed: May 22, 2008
    Publication date: September 18, 2008
    Applicant: Neurochem (International) Limited
    Inventors: Walter A. Szarek, Donald F. Weaver, Xianqi Kong, Ajay Gupta, David Migneault
  • Patent number: 7393875
    Abstract: Methods and compositions which are useful in the treatment of amyloidosis. In particular, methods and compositions are provided for inhibiting, preventing and treating amyloid deposition, e.g., in pancreatic islets, wherein the amyloidotic deposits are islet amyloid polypeptide (IAPP)-associated amyloid deposition or deposits. The methods of the invention involve administering to a subject a therapeutic compound which inhibits IAPP-associated amyloid deposits. Accordingly, the compositions and methods of the invention are useful for inhibiting IAPP-associated amyloidosis in disorders in which such amyloid deposition occurs, such as diabetes.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: July 1, 2008
    Assignee: Neurochem (International) Limited
    Inventors: Walter A. Szarek, Donald F. Weaver, Xianqi Kong, Ajay Gupta, David Migneault
  • Publication number: 20080015180
    Abstract: Methods, compounds, pharmaceutical compositions and kits are described for treating or preventing amyloid-+related disease.
    Type: Application
    Filed: May 30, 2007
    Publication date: January 17, 2008
    Applicant: Neurochem (International) Limited
    Inventors: Xianqi Kong, Walter Szarek, Francine Gervais
  • Publication number: 20080004244
    Abstract: Therapeutic compounds and methods for modulating amyloid deposition in a subject, whatever its clinical setting, are described. Amyloid deposition is modulated by the administration to a subject of an effective amount of a therapeutic compound comprising a phosphonate group and a carboxylate group, a congener thereof, or a pharmaceutically acceptable salt or ester thereof. In preferred embodiments, an interaction between an amyloidogenic protein and a basement membrane constituent is modulated.
    Type: Application
    Filed: August 2, 2007
    Publication date: January 3, 2008
    Applicant: Neurochem (International) Limited
    Inventors: Walter Szarek, Xianqi Kong, Gregory Thatcher, Boris Gorine
  • Publication number: 20070265334
    Abstract: Therapeutic compounds and methods for inhibiting amyloid deposition in a subject, whatever its clinical setting, are described. Amyloid deposition is inhibited by the administration to a subject of an effective amount of a therapeutic compound comprising an anionic group and a carrier molecule, or a pharmaceutically acceptable salt thereof, such that an interaction between an amyloidogenic protein and a basement membrane constituent is inhibited. Preferred anionic groups are sulfonates and sulfates. Preferred carrier molecules include carbohydrates, polymers, peptides, peptide derivatives, aliphatic groups, alicyclic groups, heterocyclic groups, aromatic groups and combinations thereof.
    Type: Application
    Filed: February 16, 2007
    Publication date: November 15, 2007
    Applicant: Neurochem (International) Limited
    Inventors: Robert Kisilevsky, Walter Szarek, Donald Weaver