Patents by Inventor Michael J. Meredith

Michael J. Meredith 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: 6858582
    Abstract: Methods and reagents are provided for specifically targeting biologically active compounds such as antiviral and antimicrobial drugs, or prodrugs containing the biologically active compound to specific sites such as specific organelles in phagocytic mammalian cells. The biologically active compound or prodrug is linked to a microparticle with a linker that is non-specifically or specifically cleaved inside a phagocytic mammalian cell. Alternatively, the biologically active compound or prodrug is impregnated into a porous microparticle or coated on a nonporous microparticle, and then coated with a coating material that is non-specifically or specifically degraded inside a phagocytic mammalian cell. The prodrug contains the biologically active compound linked to a polar lipid such as ceramide with a specific linker such as a peptide that is specifically cleaved to activate the prodrug in a phagocytic mammalian cell infected with a microorganism.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: February 22, 2005
    Assignee: Oregon Health and Sciences University
    Inventors: Milton B. Yatvin, Michael HB Stowell, Vincent S. Gallicchio, Michael J. Meredith
  • Publication number: 20040087482
    Abstract: This invention provides methods and reagents for specifically delivering biologically active compounds to phagocytic mammalian cells. The invention also relates to specific uptake of such biologically active compounds by phagocytic cells and delivery of such compounds to specific sites intracellularly. The invention specifically relates to methods of facilitating the entry of antimicrobial drugs and other agents into phagocytic cells and for targeting such compounds to specific organelles within the cell. The invention specifically provides compositions of matter and pharmaceutical embodiments of such compositions comprising conjugates of such antimicrobial drugs and agents covalently linked to particulate carriers generally termed microparticles. Alternative embodiments of such specific drug delivery compositions also contain polar lipid carrier molecules effective in achieving intracellular organelle targeting in infected phagocytic mammalian cells.
    Type: Application
    Filed: January 15, 2002
    Publication date: May 6, 2004
    Applicant: Oregon Health and Sciences University
    Inventors: Milton B. Yatvin, Michael HB Stowell, Vincent S. Gallicchio, Michael J. Meredith
  • Patent number: 6676972
    Abstract: This invention provides reagents and methods for specifically delivering antibiotic, antimicrobial and antiviral compounds, drugs and agents to phagocytic mammalian cells. The invention also relates to specific delivery to and uptake of such compounds by phagocytic cells. The invention specifically relates to reagents and methods for facilitating the entry of antibiotic, antimicrobial and antiviral compounds, drugs and agents into phagocytic cells. The invention specifically provides compositions of matter and pharmaceutical embodiments of such compositions comprising such antibiotic, antimicrobial or antiviral compounds, drugs and agents conjugated to, impregnated with or coated onto particulate carriers generally termed microparticles. In particular embodiments, the antibiotic, antimicrobial and antiviral compounds, drugs and agents are covalently linked to a microparticle via a specifically-degradable linker molecule which is the target of a microorganism-specific protein having enzymatic activity.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: January 13, 2004
    Assignee: Oregon Health and Science University
    Inventors: Michael J. Meredith, Milton B. Yatvin, Richard L. Pederson
  • Publication number: 20030022846
    Abstract: This invention provides reagents and methods for specifically delivering antibiotic, antimicrobial and antiviral compounds, drugs and agents to phagocytic mammalian cells. The invention also relates to specific delivery to and uptake of such compounds by phagocytic cells. The invention specifically relates to reagents and methods for facilitating the entry of antibiotic, antimicrobial and antiviral compounds, drugs and agents into phagocytic cells. The invention specifically provides compositions of matter and pharmaceutical embodiments of such compositions comprising such antibiotic, antimicrobial or antiviral compounds, drugs and agents conjugated to, impregnated with or coated onto particulate carriers generally termed microparticles. In particular embodiments, the antibiotic, antimicrobial and antiviral compounds, drugs and agents are covalently linked to a microparticle via a specifically-degradable linker molecule which is the target of a microorganism-specific protein having enzymatic activity.
    Type: Application
    Filed: September 9, 2002
    Publication date: January 30, 2003
    Inventors: Michael J. Meredith, Milton B. Yatvin, Richard L. Pederson
  • Patent number: 6455073
    Abstract: This invention provides reagents and methods for specifically delivering antibiotic, antimicrobial and antiviral compounds, drugs and agents to phagocytic mammalian cells. The invention also relates to specific delivery to and uptake of such compounds by phagocytic cells. The invention specifically relates to reagents and methods for facilitating the entry of antibiotic, antimicrobial and antiviral compounds, drugs and agents into phagocytic cells. The invention specifically provides compositions of matter and pharmaceutical embodiments of such compositions comprising such antibiotic, antimicrobial or antiviral compounds, drugs and agents conjugated to, impregnated with or coated onto particulate carriers generally termed microparticles. In particular embodiments, the antibiotic, antimicrobial and antiviral compounds, drugs and agents are covalently linked to a microparticle via a specifically-degradable linker molecule which is the target of a microorganism-specific protein having enzymatic activity.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: September 24, 2002
    Assignee: Enzrel, Inc.
    Inventors: Michael J. Meredith, Milton B. Yatvin, Richard L. Pederson
  • Patent number: 6436437
    Abstract: This invention herein describes a method of facilitating the entry of drugs into cells and tissues at physiologically protected sites at pharmicokinetically useful levels and also a method of targeting drugs to specific organelles within the cell. This polar lipid/drug conjugate targeting invention embodies an advance over other drug targeting methods known in the prior art, because the invention provides drug concentrations in such physiologically protected sites that can reach therapeutically-effective levels after administration of systemic levels much lower than are currently administered to achieve a therapeutic dose. This technology is appropriate for use with psychotropic, neurotropic and neurological drugs, agents and compounds, for rapid and efficient introduction of such agents across the blood-brain barrier.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: August 20, 2002
    Assignee: Oregon Health and Science University
    Inventors: Milton B. Yatvin, Michael H. B. Stowell, Michael J. Meredith
  • Patent number: 6339060
    Abstract: Methods and reagents are provided for specifically targeting biologically active compounds such as antiviral and antimicrobial drugs, or prodrugs containing the biologically active compound to specific sites such as specific organelles in phagocytic mammalian cells. The biologically active compound or prodrug is linked to a microparticle with a linker that is non-specifically or specifically cleaved inside a phagocytic mammalian cell. Alternatively, the biologically active compound or prodrug is impregnated into a porous microparticle or coated on a nonporous microparticle, and then coated with a coating material that is non-specifically or specifically degraded inside a phagocytic mammalian cell. The prodrug contains the biologically active compound linked to a polar lipid such as ceramide with a specific linker such as a peptide that is specifically cleaved to activate the prodrug in a phagocytic mammalian cell infected with a microorganism.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: January 15, 2002
    Assignee: Oregon Health & Science University
    Inventors: Milton B. Yatvin, Michael H B Stowell, Vincent S. Gallicchio, Michael J. Meredith
  • Patent number: 6063759
    Abstract: Methods and reagents are provided for specifically targeting biologically active compounds such as antiviral and antimicrobial drugs, or prodrugs containing the biologically active compound to specific sites such as specific organelles in phagocytic mammalian cells. The biologically active compound or prodrug is linked to a microparticle with a linker that is non-specifically or specifically cleaved inside a phagocytic mammalian cell. Alternatively, the biologically active compound or prodrug is impregnated into a porous microparticle or coated on a nonporous microparticle, and then coated with a coating material that is non-specifically or specifically degraded inside a phagocytic mammalian cell. The prodrug contains the biologically active compound linked to a polar lipid such as ceramide with a specific linker such as a peptide that is specifically cleaved to activate the prodrug in a phagocytic mammalian cell infected with a microorganism.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: May 16, 2000
    Assignee: Oregon Health Sciences University
    Inventors: Milton B. Yatvin, Michael H B Stowell, Vincent S. Gallicchio, Michael J. Meredith
  • Patent number: 6024977
    Abstract: This invention herein describes a method of facilitating the entry of drugs into cells and tissues at physiologically protected sites at pharmicokinetically useful levels and also a method of targeting drugs to specific organelles within the cell. This polar lipid/drug conjugate targeting invention embodies an advance over other drug targeting methods known in the prior art, because the invention provides drug concentrations in such physiologically protected sites that can reach therapeutically-effective levels after administration of systemic levels much lower than are currently administered to achieve a therapeutic dose. This technology is appropriate for use with psychotropic, neurotropic and neurological drugs, agents and compounds, for rapid and efficient introduction of such agents across the blood-brain barrier.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: February 15, 2000
    Assignee: Oregon Health Sciences University
    Inventors: Milton B. Yatvin, Michael H. B. Stowell, Michael J. Meredith
  • Patent number: 5840674
    Abstract: This invention provides novel methods and reagents for specifically delivering biologically active compounds to phagocytic mammalian cells. The invention also relates to specific uptake of such biologically active compounds by phagocytic cells and delivery of such compounds to specific sites intracellularly. The invention specifically relates to methods of facilitating the entry of antiviral and antimicrobial drugs and other agents into phagocytic cells and for targeting such compounds to specific organelles within the cell. The invention specifically provides compositions of matter and pharmaceutical embodiments of such compositions comprising conjugates of such antimicrobial drugs and agents covalently linked to particulate carriers generally termed microparticles. In particular embodiments, the antimicrobial drug is covalently linked to a microparticle via an organic linker molecule which is the target of a microorganism-specific protein having enzymatic activity.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: November 24, 1998
    Assignee: Oregon Health Sciences University
    Inventors: Milton B. Yatvin, Michael H. B. Stowell, Vincent S. Gallicchio, Michael J. Meredith
  • Patent number: 5827819
    Abstract: This invention herein describes a method of facilitating the entry of drugs into cells and tissues at physiologically protected sites at pharmicokinetically useful levels and also a method of targeting drugs to specific organelles within the cell. This polar lipid/drug conjugate targeting invention embodies an advance over other drug targeting methods known in the prior art, because the invention provides drug concentrations in such physiologically protected sites that can reach therapeutically-effective levels after administration of systemic levels much lower than are currently administered to achieve a therapeutic dose. This technology is appropriate for use with psychotropic, neurotropic and neurological drugs, agents and compounds, for rapid and efficient introduction of such agents across the blood-brain barrier.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: October 27, 1998
    Assignee: Oregon Health Sciences University
    Inventors: Milton B. Yatvin, Michael H. B. Stowell, Michael J. Meredith
  • Patent number: 5543390
    Abstract: This invention provides novel methods and reagents for specifically delivering biologically active compounds to phagocytic mammalian cells. The invention also relates to specific uptake of such biologically active compounds by phagocytic cells and delivery of such compounds to specific sites intracellularly. The invention specifically relates to methods of facilitating the entry of antimicrobial drugs and other agents into phagocytic cells and for targeting such compounds to specific organelles within the cell. The invention specifically provides compositions of matter and pharmaceutical embodiments of such compositions comprising conjugates of such antimicrobial drugs and agents covalently linked to particulate carriers generally termed microparticles. In particular embodiments, the antimicrobial drug is covalently linked to a microparticle via an organic linker molecule which is the target of a microorganism-specific protein having enzymatic activity.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: August 6, 1996
    Assignee: State of Oregon, Acting by and Through the Oregon State Board of Higher Education, Acting for and on Behalf of the Oregon Health Sciences University
    Inventors: Milton B. Yatvin, Michael H. B. Stowell, Vincent S. Gallicchio, Michael J. Meredith
  • Patent number: 5543391
    Abstract: This invention provides novel methods and reagents for specifically delivering biologically active compounds to phagocytic mammalian cells. The invention also relates to specific uptake of such biologically active compounds by phagocytic cells and delivery of such compounds to specific sites intracellularly. The invention specifically relates to methods of facilitating the entry of antimicrobial drugs and other agents into phagocytic cells and for targeting such compounds to specific organelles within the cell. The invention specifically provides compositions of matter and pharmaceutical embodiments of such compositions comprising conjugates of such antimicrobial drugs and agents covalently linked to particulate carriers generally termed microparticles. In particular embodiments, the antimicrobial drug is covalently linked to a microparticle via an organic linker molecule which is the target of a microorganism-specific protein having enzymatic activity.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: August 6, 1996
    Assignee: State of Oregon, Acting by and Through the Oregon State Board of Higher Education, Acting for and on Behalf of the Oregon Health Sciences University
    Inventors: Milton B. Yatvin, Michael H. B. Stowell, Vincent S. Gallicchio, Michael J. Meredith