Patents by Inventor Alexander Yurkovetskiy

Alexander Yurkovetskiy 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: 8546419
    Abstract: The present invention relates to conjugate comprising a carrier substituted with one or more occurrences of a moiety having the structure: wherein each occurrence of M is independently a modifier having a molecular weight ?10 kDa; denotes direct of indirect attachment of M to linker LM; and each occurrence of LM is independently an optionally substituted succinamide-containing linker, whereby the modifier M is directly or indirectly attached to the succinamide linker through an amide bond, and the carrier is linked directly or indirectly to each occurrence of the succinamide linker through an ester bond. In another aspect, the invention provides compositions comprising the conjugates, methods for their preparation, and methods of use thereof in the treatment of various disorder, including, but not limited to cancer.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: October 1, 2013
    Assignee: The General Hospital Corporation
    Inventors: Mikhail I. Papisov, Alexander Yurkovetskiy
  • Patent number: 8361442
    Abstract: The present invention relates to biodegradable biocompatible polyketals, methods for their preparation, and methods for treating animals by administration of biodegradable biocompatible polyketals. In one aspect, a method for forming the biodegradable biocompatible polyketals comprises combining a glycol-specific oxidizing agent with a polysaccharide to form an aldehyde intermediate, which is combined with a reducing agent to form the biodegradable biocompatible polyketal. The resultant biodegradable biocompatible polyketals can be chemically modified to incorporate additional hydrophilic moieties. A method for treating animals includes the administration of the biodegradable biocompatible polyketal in which biologically active compounds or diagnostic labels can be disposed. The present invention also relates to chiral polyketals, methods for their preparation, and methods for use in chromatographic applications, specifically in chiral separations.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: January 29, 2013
    Assignee: The General Hospital Corporation
    Inventors: Mikhail I. Papisov, Alexander Yurkovetskiy
  • Publication number: 20120289535
    Abstract: The present invention relates to conjugate comprising a carrier substituted with one or more occurrences of a moiety having the structure: wherein each occurrence of M is independently a modifier having a molecular weight ?10 kDa; denotes direct of indirect attachment of M to linker LM; and each occurrence of LM is independently an optionally substituted succinamide-containing linker, whereby the modifier M is directly or indirectly attached to the succinamide linker through an amide bond, and the carrier is linked directly or indirectly to each occurrence of the succinamide linker through an ester bond. In another aspect, the invention provides compositions comprising the conjugates, methods for their preparation, and methods of use thereof in the treatment of various disorder, including, but not limited to cancer.
    Type: Application
    Filed: July 19, 2012
    Publication date: November 15, 2012
    Applicant: The General Hospital Corporation
    Inventors: Mikhail I. Papisov, Alexander Yurkovetskiy
  • Patent number: 8247427
    Abstract: The present invention relates to conjugate comprising a carrier substituted with one or more occurrences of a moiety having the structure: wherein each occurrence of M is independently a modifier having a molecular weight ?10 kDa; denotes direct of indirect attachment of M to linker LM; and each occurrence of LM is independently an optionally substituted succinamide-containing linker, whereby the modifier M is directly or indirectly attached to the succinamide linker through an amide bond, and the carrier is linked directly or indirectly to each occurrence of the succinamide linker through an ester bond. In another aspect, the invention provides compositions comprising the conjugates, methods for their preparation, and methods of use thereof in the treatment of various disorder, including, but not limited to cancer.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: August 21, 2012
    Assignee: The General Hospital Corporation
    Inventors: Mikhail I. Papisov, Alexander Yurkovetskiy
  • Publication number: 20120027680
    Abstract: The present invention relates to biodegradable biocompatible polyketals, methods for their preparation, and methods for treating animals by administration of biodegradable biocompatible polyketals. In one aspect, a method for forming the biodegradable biocompatible polyketals comprises combining a glycol-specific oxidizing agent with a polysaccharide to form an aldehyde intermediate, which is combined with a reducing agent to form the biodegradable biocompatible polyketal. The resultant biodegradable biocompatible polyketals can be chemically modified to incorporate additional hydrophilic moieties. A method for treating animals includes the administration of the biodegradable biocompatible polyketal in which biologically active compounds or diagnostic labels can be disposed. The present invention also relates to chiral polyketals, methods for their preparation, and methods for use in chromatographic applications, specifically in chiral separations.
    Type: Application
    Filed: July 28, 2011
    Publication date: February 2, 2012
    Applicant: THE GENERAL HOSPITAL CORPORATION
    Inventors: Mikhail I. Papisov, Alexander Yurkovetskiy
  • Patent number: 8101164
    Abstract: The present invention relates to conjugate comprising a carrier substituted with one or more occurrences of a moiety having the structure (I): wherein each occurrence of M is independently a modifier having a molecular weight ?10 kDa; denotes direct of indirect attachment of M to linker LM; and each occurrence of LM is independently an optionally substituted succinamide-containing linker, whereby the modifier M is directly or indirectly attached to the succinamide linker through an amide bond, and the carrier is linked directly or indirectly to each occurrence of the succinamide linker through an ester bond. In another aspect, the invention provides compositions comprising the conjugates, methods for their preparation, and methods of use thereof in the treatment of various disorder, including, but not limited to cancer.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: January 24, 2012
    Assignee: The General Hospital Corporation
    Inventors: Mikhail I. Papisov, Alexander Yurkovetskiy
  • Publication number: 20120004255
    Abstract: The present invention relates to conjugate comprising a carrier substituted with one or more occurrences of a moiety having the structure: wherein each occurrence of M is independently a modifier having a molecular weight ?10 kDa; denotes direct of indirect attachment of M to linker LM; and each occurrence of LM is independently an optionally substituted succinamide-containing linker, whereby the modifier M is directly or indirectly attached to the succinamide linker through an amide bond, and the carrier is linked directly or indirectly to each occurrence of the succinamide linker through an ester bond. In another aspect, the invention provides compositions comprising the conjugates, methods for their preparation, and methods of use thereof in the treatment of various disorder, including, but not limited to cancer.
    Type: Application
    Filed: June 3, 2011
    Publication date: January 5, 2012
    Applicant: THE GENERAL HOSPITAL CORPORATION
    Inventors: Mikhail I. Papisov, Alexander Yurkovetskiy
  • Patent number: 8030459
    Abstract: The present invention relates to biodegradable biocompatible polyketals, methods for their preparation, and methods for creating animals by administration of biodegradable biocompatible polyketals. In one aspect, a method for forming the biodegradable biocompatible polyketals comprises combining a glycol-specific oxidizing agent with a polysaccharide to form an aldehyde intermediate, which is combined with a reducing agent to form the biodegradable biocompatible polyketal. The resultant biodegradable biocompatible polyketals can be chemically modified to incorporate additional hydrophilic moieties. A method for treating animals includes the administration of the biodegradable biocompatible polyketal in which biologically active compounds or diagnostic labels can be disposed. The present invention also relates to chiral polyketals, methods for their preparation, and methods for use in chromatographic applications, specifically in chiral separations.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: October 4, 2011
    Assignee: The General Hospital Corporation
    Inventors: Mikhail I. Papisov, Alexander Yurkovetskiy
  • Publication number: 20110059010
    Abstract: The present invention relates to conjugate comprising a carrier substituted with one or more occurrences of a moiety having the structure (I): wherein each occurrence of M is independently a modifier having a molecular weight ?10 kDa; denotes direct of indirect attachment of M to linker LM; and each occurrence of LM is independently an optionally substituted succinamide-containing linker, whereby the modifier M is directly or indirectly attached to the succinamide linker through an amide bond, and the carrier is linked directly or indirectly to each occurrence of the succinamide linker through an ester bond. In another aspect, the invention provides compositions comprising the conjugates, methods for their preparation, and methods of use thereof in the treatment of various disorder, including, but not limited to cancer.
    Type: Application
    Filed: August 19, 2010
    Publication date: March 10, 2011
    Applicant: THE GENERAL HOSPITAL CORPORATION
    Inventors: Mikhail I. Papisov, Alexander Yurkovetskiy
  • Patent number: 7790150
    Abstract: The present invention relates to conjugate comprising a carrier substituted with one or more occurrences of a moiety having the structure (I): wherein each occurrence of M is independently a modifier having a molecular weight ?10 kDa; denotes direct of indirect attachment of M to linker LM; and each occurrence of LM is independently an optionally substituted succinamide-containing linker, whereby the modifier M is directly or indirectly attached to the succinamide linker through an amide bond, and the carrier is linked directly or indirectly to each occurrence of the succinamide linker through an ester bond. In another aspect, the invention provides compositions comprising the conjugates, methods for their preparation, and methods of use thereof in the treatment of various disorder, including, but not limited to cancer.
    Type: Grant
    Filed: September 4, 2004
    Date of Patent: September 7, 2010
    Assignee: The General Hospital Corporation
    Inventors: Mikhail I. Papisov, Alexander Yurkovetskiy
  • Patent number: 7288264
    Abstract: Contact killing antimicrobial articles, devices and formulations are described which kill microorganisms on contact. The articles, devices or formulations contain a non-leaching antimicrobial material which is a unique combination of an organic matrix having biocidal metallic materials non-leachably associated with the matrix. The antimicrobial material may used to form an antimicrobial coating or layer on a surface of the article or device, or may be dispersed in a vehicle or carrier to form a topical antiseptic or disinfectant, or solid shape having contact killing antimicrobial properties. When a microorganism contacts the article, device, or formulation, the biocidal metallic material is transferred to the microorganism in amounts sufficient to kill it.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: October 30, 2007
    Assignee: Surfacine Development Company, L.L.C.
    Inventors: Samuel P. Sawan, Tadmor Shalon, Sundar Subramanyam, Alexander Yurkovetskiy
  • Publication number: 20060058513
    Abstract: The present invention relates to biodegradable biocompatible polyketals, methods for their preparation, and methods for creating animals by administration of biodegradable biocompatible polyketals. In one aspect, a method for forming the biodegradable biocompatible polyketals comprises combining a glycol-specific oxidizing agent with a polysaccharide to form an aldehyde intermediate, which is combined with a reducing agent to form the biodegradable biocompatible polyketal. The resultant biodegradable biocompatible polyketals can be chemically modified to incorporate additional hydrophilic moieties. A method for treating animals includes the administration of the biodegradable biocompatible polyketal in which biologically active compounds or diagnostic labels can be disposed. The present invention also relates to chiral polyketals, methods for their preparation, and methods for use in chromatographic applications, specifically in chiral separations.
    Type: Application
    Filed: July 18, 2003
    Publication date: March 16, 2006
    Inventors: Mikhail Papisov, Alexander Yurkovetskiy
  • Patent number: 6264936
    Abstract: An antimicrobial material is described which can be used to form on the surface on a substrate a non-leaching antimicrobial coating or layer which kills microorganisms on contact. The non-leaching antimicrobial coating or layer is a unique combination of an organic matrix immobilized on the surface of the substrate to having biocidal metallic materials non-leachably associated with the matrix. When a microorganism contacts the coating or layer, the biocidal metallic material is transferred to the microorganism in amounts sufficient to kill it. Methods of applying the coating or layer to a substrate also are provided.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: July 24, 2001
    Assignees: BioPolymerix, Inc., Surfacine Development Company, LLC
    Inventors: Samuel P. Sawan, Sundar Subramanyam, Alexander Yurkovetskiy
  • Patent number: 6180584
    Abstract: The present invention relates to a composition that, when applied to a substrate, forms an adherent, transparent, water insoluble polymeric film on the substrate surface that provides sustained antimicrobial disinfecting action for prolonged periods, without the necessity for reapplication. The coating provides surface disinfecting action by a contact-killing mechanism, and does not release its components into contacting solutions at levels that would result in solution disinfection. The polymeric film formed by the composition of the invention can be removed by treatment with dilute alcoholic base.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: January 30, 2001
    Assignee: Surfacine Development Company, LLC
    Inventors: Samuel P. Sawan, Sundar Subramanyam, Alexander Yurkovetskiy
  • Patent number: 6126931
    Abstract: Contact killing antimicrobial articles, devices and formulations are described which kill microorganisms on contact. The articles, devices or formulations contain a non-leaching antimicrobial material which is a unique combination of an organic matrix having biocidal metallic materials non-leachably associated with the matrix. The antimicrobial material may used to form an antimicrobial coating or layer on a surface of the article or device, or may be dispersed in a vehicle or carrier to form a topical antiseptic or disinfectant, or solid shape having contact killing antimicrobial properties. When a microorganism contacts the article, device, or formulation, the biocidal metallic material is transferred to the microorganism in amounts sufficient to kill it.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: October 3, 2000
    Assignees: Surfacine Development Company, LLC, BioPolymerix, Inc.
    Inventors: Samuel P. Sawan, Sundar Subramanyam, Alexander Yurkovetskiy
  • Patent number: 6030632
    Abstract: An antimicrobial material comprising an antimicrobial metallic material and a biguanide polymer reacted with a crosslinker to form an adduct is described. Both freestanding antimicrobial materials and antimicrobial films are provided. The antimicrobial material does not release biocidal levels of leachables into a contacting solution.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: February 29, 2000
    Assignee: BioPolymerix and Surfacine Development Company
    Inventors: Samuel P. Sawan, Sundar Subramanyam, Alexander Yurkovetskiy
  • Patent number: 5869073
    Abstract: A liquid composition for applying a non-leachable antimicrobial coating on a surface. The liquid composition consists of a solution, dispersion or suspension of a biguanide polymer reacted with a cross-linking agent to form an adduct, and an antimicrobial metal material. The resulting antimicrobial coating does not release biocidal levels of leachables into surrounding solution.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: February 9, 1999
    Assignees: Biopolymerix, Inc, Surfacine Development Company, Inc.
    Inventors: Samuel P. Sawan, Tadmor Shalon, Sundar Subramanyam, Alexander Yurkovetskiy
  • Patent number: 5849311
    Abstract: An antimicrobial material is described which can be used to form on the surface on a substrate a non-leaching antimicrobial coating or layer which kills microorganisms on contact. The non-leaching antimicrobial coating or layer is a unique combination of an organic matrix immobilized on the surface of the substrate to having biocidal metallic materials non-leachably associated with the matrix. When a microorganism contacts the coating or layer, the biocidal metallic material is transferred to the microorganism in amounts sufficient to kill it.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: December 15, 1998
    Assignees: BioPolymerix, Inc., Surfacine Development Company, LLC
    Inventors: Samuel P. Sawan, Tadmor Shalon, Sundar Subramanyam, Alexander Yurkovetskiy
  • Patent number: 5817325
    Abstract: Contact killing antimicrobial articles, devices and formulations are described which kill microorganisms on contact. The articles, devices or formulations contain a non-leaching antimicrobial material which is a unique combination of an organic matrix having biocidal metallic materials non-leachably associated with the matrix. The antimicrobial material may used to form an antimicrobial coating or layer on a surface of the article or device, or may be dispersed in a vehicle or carrier to form a topical antiseptic or disinfectant, or solid shape having contact killing antimicrobial properties. When a microorganism contacts the article, device, or formulation, the biocidal metallic material is transferred to the microorganism in amounts sufficient to kill it.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: October 6, 1998
    Assignees: Biopolymerix, Inc., Surfacine Development Company, L.L.C.
    Inventors: Samuel P. Sawan, Tadmor Shalon, Sundar Subramanyam, Alexander Yurkovetskiy
  • Patent number: 5681468
    Abstract: A liquid dispenser for dispensing sterile liquid comprising a container for storing the sterile liquid, a nozzle assembly mounted on the container, and a filter which has at least one surface and a plurality of its pores coated with a metallic material, e.g., a metal or metal oxide or metal salt, that is bacteriostatic or bacteriocidal, is described. The metal coated filter, methods for coating the filter, and methods for using the liquid dispenser are also provided.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: October 28, 1997
    Assignee: BioPolymerix, Inc.
    Inventors: Samuel P. Sawan, Tadmor Shalon, Sundar Subramanyam, Alexander Yurkovetskiy