Patents by Inventor Michael J. Roberts

Michael J. Roberts 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: 20110020422
    Abstract: Isolatable, hydroxyapatite-targeting polymeric structures, and biologically active conjugates thereof, are provided. The polymeric structure includes a linear or branched water-soluble and non-peptidic polymer backbone, such as a PEG backbone, having at least two termini, a first terminus being covalently bonded to a hydroxyapatite-targeting moiety, such as a bisphosphonate, and a second terminus covalently bonded to a chemically reactive group, wherein said chemically reactive group is protected or unprotected. Methods of preparing and using hydroxyapatite-targeting polymeric structures, and biologically active conjugates thereof, are also provided.
    Type: Application
    Filed: October 6, 2010
    Publication date: January 27, 2011
    Applicant: Nektar Therapeutics
    Inventors: Michael J. Roberts, Antoni Kozlowski
  • Publication number: 20100332873
    Abstract: An information handling system includes a plurality of power supply units (PSUs) to supply power to one or more system components. For each PSU of the plurality of PSUs, a power conversion efficiency profile for the PSU is determined using a power management control module of the information handling system. The power conversion efficiency profile represents a power conversion efficiency of the PSU for each of one or more power outputs capable of being supplied by the PSU. The power management control module determines a total amount of power to be supplied to a load of the information handling system, and engages a select number of PSUs to provide the total amount of power based on the total amount of power and the power conversion efficiency profiles of the PSUs.
    Type: Application
    Filed: June 30, 2009
    Publication date: December 30, 2010
    Inventors: Ashish Munjal, Jaydev Reddy, Michael J. Roberts
  • Patent number: 7834088
    Abstract: The invention provides reagents and methods for conjugating a polymer specifically to the ?-amine of a polypeptide. The invention provides monofunctional, bifunctional, and multifunctional PEGs and related polymers having a terminal thioester moiety capable of specifically conjugating to the ?-amine of a polypeptide having a cysteine or histidine residue at the N-terminus. The invention provides reactive thioester-terminated PEG polymers that have suitable reactivity with an N-terminal cysteine or histidine residue of a polypeptide to produce an amide bond between the PEG molecule and the polypeptide.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: November 16, 2010
    Assignee: Nektar Therapeutics
    Inventors: Michael J. Roberts, Zhihao Fang
  • Patent number: 7829074
    Abstract: Isolatable, hydroxyapatite-targeting polymeric structures, and biologically active conjugates thereof, are provided. The polymeric structure includes a linear or branched water-soluble and non-peptidic polymer backbone, such as a PEG backbone, having at least two termini, a first terminus being covalently bonded to a hydroxyapatite-targeting moiety, such as a bisphosphonate, and a second terminus covalently bonded to a chemically reactive group, wherein said chemically reactive group is protected or unprotected. Methods of preparing and using hydroxyapatite-targeting polymeric structures, and biologically active conjugates thereof, are also provided.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: November 9, 2010
    Assignee: Nektar Therapeutics
    Inventors: Michael J. Roberts, Antoni Kozlowski
  • Patent number: 7829708
    Abstract: The present invention provides compositions and methods for the treatment of disorders of abnormal cell proliferation and/or inflammation, such as psoriasis and inflammatory bowel disease, in a human or other host animals.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: November 9, 2010
    Assignee: Chelsea Therapeutics, Inc.
    Inventors: Michael J. Roberts, Simon Pedder
  • Patent number: 7700314
    Abstract: PEG-IFN-? conjugates, where a PEG moiety is covalently bound to Cys17 of human IFN-?, are produced by a process of site specific PEGylation with a thiol reactive PEGylating agent. A pharmaceutical composition and a method for treating infections, tumors and autoimmune and inflammatory diseases are also provided. The invention further relates to a method for the stepwise attachment of PEG moieties in series to a polypeptide, and more particularly to IFN-?.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: April 20, 2010
    Assignee: Merck Serono SA
    Inventors: Nabil El-Tayar, Michael J. Roberts, Milton Harris, Wayne Sawlivich
  • Publication number: 20100069571
    Abstract: The invention provides reagents and methods for conjugating a polymer specifically to the ?-amine of a polypeptide. The invention provides monofunctional, bifunctional, and multifunctional PEGs and related polymers having a terminal thioester moiety capable of specifically conjugating to the ?-amine of a polypeptide having a cysteine or histidine residue at the N-terminus. The invention provides reactive thioester-terminated PEG polymers that have suitable reactivity with an N-terminal cysteine or histidine residue of a polypeptide to produce an amide bond between the PEG molecule and the polypeptide.
    Type: Application
    Filed: February 17, 2009
    Publication date: March 18, 2010
    Applicant: Nektar Therapeutics
    Inventors: Michael J. Roberts, Zhihao Fang
  • Publication number: 20090323553
    Abstract: A system and method of enabling a transparent Ethernet switch are disclosed. According to an aspect, a network switch is disclosed. The network switch can include a plurality of physical ports configured to communicate data via a network. The network switch can further include a memory configured to store a first forwarding database, and a plurality of aggregate zone entries within the first forwarding database. The aggregate zone entries can also include a port identifier of first port of the plurality of physical ports to be used as a transparent port within a first aggregate zone.
    Type: Application
    Filed: June 30, 2008
    Publication date: December 31, 2009
    Applicant: DELL PRODUCTS, LP
    Inventors: Hendrich M. Hernandez, Robert L. Winter, Bruce A. Holmes, Michael J. Roberts
  • Publication number: 20090307514
    Abstract: Systems and methods for power management in an information handling system are disclosed. A method may include determining a power requirement of resources configured to receive power from a plurality of power supply units including one or more online power supply units, one or more redundant power supply units, and one or more standby power supply units. The method may also include determining a power capacity of the one or more online power supply units. The method may additionally include determining if the power capacity of the one or more online power supply units exceeds the power requirement of the resources. The method may further include transitioning at least one of the power supply units based on such determining steps.
    Type: Application
    Filed: June 9, 2008
    Publication date: December 10, 2009
    Applicant: DELL PRODUCTS L.P.
    Inventors: Michael J. Roberts, Ashish Munjal
  • Publication number: 20090253720
    Abstract: The present invention provides pharmaceutical compositions comprising an antifolate compound. The composition exhibit improved bioavailability, and they particularly incorporate beneficial excipients that increase solubility and bioavailability, such as cyclodextrins or compounds formed of fatty acid esters of glycerol and polyethylene glycol esters. The pharmaceutical compositions are useful in the treatment of multiple conditions, including abnormal cell proliferation, inflammatory diseases, asthma, and arthritis.
    Type: Application
    Filed: April 7, 2009
    Publication date: October 8, 2009
    Inventors: Michael J. Roberts, Harish K. Pimplaskar
  • Publication number: 20090160977
    Abstract: A vision magnification system includes a fixed work area, a camera, and drive mechanism capable of moving the camera in at least one direction. The vision magnification system provides a magnified image of an object for viewing by a user and is particularly useful for individuals having impaired vision. A control device includes a pointing device, to control movement of the camera in a direction provided by the user, and a tracking device, which can be coupled to a writing instrument to control movement of the camera when the user uses the writing instrument.
    Type: Application
    Filed: November 17, 2008
    Publication date: June 25, 2009
    Inventors: Timothy M. Curtin, Michael J. Roberts
  • Patent number: 7547509
    Abstract: The present invention provides variants of cyanovirin-N and water-soluble polymer conjugates thereof, and methods of preparing such conjugates. The cyanovirin-N of the invention are particularly suited for site-selective covalent attachment of one or more water soluble polymers, to provide polymer conjugates of cyanovirin-N variants exhibiting antiviral activity.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: June 16, 2009
    Assignees: Nektar Therapeutics AL, Corporation, National Institute of Heatlh
    Inventors: M. Elizabeth Snell, Michael J. Roberts, Toshiyuki Mori, Barry R. O'Keefe, Michael R. Boyd
  • Patent number: 7511095
    Abstract: The invention provides reagents and methods for conjugating a polymer specifically to the ?-amine of a polypeptide. The invention provides monofunctional, bifunctional, and multifunctional PEGs and related polymers having a terminal thioester moiety capable of specifically conjugating to the ?-amine of a polypeptide having a cytokine or histidine residue at the N-terminus. The invention provides reactive thioester-terminated PEG polymers that have suitable reactivity with an N-terminal cysteine or histidine residue of a polypeptide to produce an amide bond between the PEG molecule and the polypeptide.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: March 31, 2009
    Assignee: Nektar Therapeutics AL, Corporation
    Inventors: Michael J. Roberts, Zhihao Fang
  • Publication number: 20090023705
    Abstract: The present invention provides pharmaceutical compositions comprising droxidopa alone, or in combination with one or more further active ingredients, for the treatment of conditions, such as mood disorders, sleep disorders, or attention deficit disorders. In certain embodiments, the compositions useful in the methods of the invention comprise droxidopa and a compound selected from the group consisting of DOPA decarboxylase inhibiting compounds, catechol-O-methyltransferase inhibiting compounds, cholinesterase inhibiting compounds, monoamine oxidase inhibiting compounds, norepinephrine reuptake inhibiting compounds, selective serotonin reuptake inhibiting compounds, tricyclic antidepressant compounds, serotonin norepinephrine reuptake inhibiting compounds, norepinephrine dopamine reuptake inhibiting compound, noradrenergic and specific serotonergic antidepressants, and combinations thereof.
    Type: Application
    Filed: May 7, 2008
    Publication date: January 22, 2009
    Inventors: Michael J. Roberts, Simon Pedder
  • Publication number: 20080227830
    Abstract: The present invention is directed to methods of treating neurally mediated hypotension. In particular, the invention provides pharmaceutical compositions comprising droxidopa alone, or in combination with one or more further active ingredients, that can be administered to a patient for the treatment of neurally mediated hypotension.
    Type: Application
    Filed: March 12, 2008
    Publication date: September 18, 2008
    Inventors: Michael J. Roberts, Simon Pedder
  • Publication number: 20080221170
    Abstract: The present invention provides methods of treating fibromyalgia or other diseases or conditions causing widespread pain and/or fatigue. In particular, the invention provides pharmaceutical compositions comprising droxidopa alone, or in combination with one or more further active agents, that can be used in the inventive methods. The methods of treatment can comprise treating, preventing, reducing, or eliminating a variety of symptoms recognized as indicative of fibromyalgia, such as chronic pain, allodynia, hyperalgesia, fatigue, sleep disturbance, and depression.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 11, 2008
    Inventors: Michael J. Roberts, Simon Pedder
  • Publication number: 20080214585
    Abstract: The present invention is directed to antifolate compounds having the structure wherein: X is CHR9 or NR9; Y1, Y2, and Y3 independently are O or S; V1 and V2 independently are O, S, or NZ; Z is H, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, or alkaryl; R1 and R2 independently are H, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, or alkaryl; R3 is H, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted alkoxy, hydroxyl, or halo; and R4, R5, R6, R7, R8, and R9 independently are H, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, acyl, —C(O)-alkyl, —C(O)-alkenyl, or —C(O)—alkynyl; as well as pharmaceutically acceptable esters, amides, salts, solvates, and prodrugs thereof.
    Type: Application
    Filed: January 18, 2008
    Publication date: September 4, 2008
    Inventors: Michael J. Roberts, Simon Pedder
  • Patent number: 7357925
    Abstract: PEG-IFN-? conjugates, where a PEG moiety is covalently bound to Cys17 of human IFN-?, are produced by a process of site specific PEGylation with a thiol reactive PEGylating agent. A pharmaceutical composition and a method for treating infections, tumors and autoimmune and inflammatory diseases are also provided. The invention further relates to a method for the stepwise attachment of PEG moieties in series to a polypeptide, and more particularly to IFN-?.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: April 15, 2008
    Assignee: Laboratoires Seronosa
    Inventors: Nabil El-Tayar, Michael J. Roberts, Milton Harris, Wayne Sawlivich
  • Patent number: 7267941
    Abstract: The present invention provides variants of cyanovirin-N and water-soluble polymer conjugates thereof. The cyanovirin-N of the invention are particularly suited for site-selective covalent attachment of one or more water soluble polymers, to provide polymer conjugates of cyanovirin-N variants exhibiting antiviral activity.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: September 11, 2007
    Assignees: The Government of the United States of America as represented by The Secretary of The Department of Health and Human Services, The National Institutes of Health, Nektar Therapeutics AL
    Inventors: M. Elizabeth Snell, Michael J. Roberts, Toshiyuki Mori, Barry R. O'Keefe, Michael R. Boyd
  • Patent number: 7226937
    Abstract: The invention relates to methods for modulating photodamage via the use of collagen derived molecules which either enhance or inhibit damage caused by ultraviolet light.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: June 5, 2007
    Assignee: Board of Regents on Behalf of the University of Arizona
    Inventors: Georg T. Wondrak, Michael J. Roberts, Moonsun Kim, Myron K. Jacobson, Elaine L. Jacobson