Patents by Inventor Nnochiri N. Ekwuribe

Nnochiri N. Ekwuribe 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: 6770625
    Abstract: Pharmaceutical compositions that include a drug-oligomer conjugate, a fatty acid component, and a bile salt component are described. The drug is covalently coupled to an oligomeric moiety. The fatty acid component and the bile salt component are present in a weight-to-weight ratio of between 1:5 and 5:1. Methods of treating diseases in a subject in need of such treatment using such pharmaceutical compositions are also provided, as are methods of providing such pharmaceutical compositions.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: August 3, 2004
    Assignee: Nobex Corporation
    Inventors: Richard Soltero, Nnochiri N. Ekwuribe, Foyeke Opawale, Bruce Rehlaender, Anthony Hickey, Li Li Bovet
  • Publication number: 20040110735
    Abstract: The present invention relates to amphiphilic drug-oligomer conjugates capable of traversing the blood-brain barrier (“BBB”) and to methods of making and using such conjugates. An amphiphilic drug-oligomer conjugate comprises a therapeutic compound conjugated to an oligomer, wherein the oligomer comprises a lipophilic moiety coupled to a hydrophilic moiety. The conjugates of the invention further comprise therapeutic agents such as proteins, peptides, nucleosides, nucleotides, antiviral agents, antineoplastic agents, antibiotics, etc., and prodrugs, precursors, derivatives and intermediates thereof, chemically coupled to amphiphilic oligomers.
    Type: Application
    Filed: November 19, 2003
    Publication date: June 10, 2004
    Inventors: Nnochiri N. Ekwuribe, Balasingam Radhakrishnan, Christopher H. Price, Wesley R. Anderson, Aslam M. Ansari
  • Publication number: 20040102381
    Abstract: The present invention relates to amphiphilic drug-oligomer conjugates capable of traversing the blood-brain barrier (“BBB”) and to methods of making and using such conjugates. An amphiphilic drug-oligomer conjugate comprises a therapeutic compound conjugated to an oligomer, wherein the oligomer comprises a lipophilic moiety coupled to a hydrophilic moiety. The conjugates of the invention further comprise therapeutic agents such as proteins, peptides, nucleosides, nucleotides, antiviral agents, antineoplastic agents, antibiotics, etc., and prodrugs, precursors, derivatives and intermediates thereof, chemically coupled to amphiphilic oligomers.
    Type: Application
    Filed: November 19, 2003
    Publication date: May 27, 2004
    Inventors: Nnochiri N. Ekwuribe, Balasingam Radhakrishnan, Christopher H. Price, Wesley R. Anderson, Aslam M. Ansari
  • Publication number: 20040091452
    Abstract: Calcitonin drug-oligomer conjugates that include a calcitonin drug coupled to an oligomer including a single polyalkylene glycol moiety consisting of between 4 and 10 polyalkylene glycol subunits are disclosed. Pharmaceutical compositions including such conjugates and methods of treating bone disorders by administering such conjugates are also disclosed.
    Type: Application
    Filed: November 8, 2002
    Publication date: May 13, 2004
    Inventors: Nnochiri N. Ekwuribe, Balasingam Radhakrishnan
  • Patent number: 6713452
    Abstract: A mixture of conjugates in which each conjugate in the mixture comprises a calcitonin drug coupled to an oligomer that includes a polyalkylene glycol moiety is disclosed. The mixture may lower serum calcium levels in a subject by 10, 15 or even 20 percent or more. Moreover, the mixture may be more effective at surviving an in vitro model of intestinal digestion than non-conjugated calcitonin. Furthermore, the mixture may exhibit a higher bioavailability than non-conjugated calcitonin.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: March 30, 2004
    Assignee: Nobex Corporation
    Inventors: Nnochiri N. Ekwuribe, Christopher H. Price, Aslam M. Ansari, Amy L. Odenbaugh
  • Patent number: 6703381
    Abstract: The present invention relates to amphiphilic drug-oligomer conjugates capable of traversing the blood-brain barrier (“BBB”) and to methods of making and using such conjugates. An amphiphilic drug-oligomer conjugates comprise a therapeutic compound conjugated to an oligomer, wherein the oligomer comprises a lipophilic moiety coupled to a hydrophilic moiety. The conjugates of the invention further comprise therapeutic agents such as proteins, peptides, nucleosides, nucleotides, antiviral agents, antineoplastic agents, antibiotics, etc., and prodrugs, precursors, derivatives and intermediates thereof, chemically coupled to amphiphilic oligomers.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: March 9, 2004
    Assignee: Nobex Corporation
    Inventors: Nnochiri N. Ekwuribe, Balasingam Rhadakrishnan, Christopher H. Price, Wes Anderson, Jr., Aslam M. Ansari
  • Publication number: 20040038866
    Abstract: Pharmaceutical compositions that include insulin, an insulin drug-oligomer conjugate, a fatty acid component, and a bile salt component or a bile salt component without a fatty acid component are described. The insulin drug is covalently coupled to an oligomeric moiety. The fatty acid component and the bile salt component, when together, can be present in a weight-to-weight ratio of between 1:15 and 15:1. Methods of treating an insulin deficiency in a subject in need of such treatment using such pharmaceutical compositions are also provided, as are methods of providing such pharmaceutical compositions.
    Type: Application
    Filed: March 5, 2003
    Publication date: February 26, 2004
    Inventors: Richard Soltero, Balasingam Radhakrishnan, Nnochiri N. Ekwuribe, Bruce Rehlaender, Anthony Hickey, Li Li Bovet
  • Publication number: 20040017387
    Abstract: Pharmaceutical compositions that include a drug and/or drug-oligomer conjugate, a fatty acid component and a bile salt component, or a bile salt component without a fatty acid component are described. The drug can be covalently coupled to an oligomeric moiety. The fatty acid component and the bile salt component, when together, can be present in a weight-to-weight ratio of between 1:15 and 15:1 or any value between. Methods of treating diseases in a subject in need of such treatment using the pharmaceutical compositions of this invention are also provided, as well as methods of providing such pharmaceutical compositions.
    Type: Application
    Filed: March 5, 2003
    Publication date: January 29, 2004
    Inventors: Richard Soltero, Nnochiri N. Ekwuribe, Foyeke Opawale, Bruce Rehlaender, Anthony Hickey, Li Li Bovet
  • Publication number: 20030228275
    Abstract: A non-polydispersed mixture of conjugates in which each conjugate in the mixture comprises a drug coupled to an oligomer that includes a polyalkylene glycol moiety is disclosed. The mixture may exhibit higher in vivo activity than a polydispersed mixture of similar conjugates. The mixture may be more effective at surviving an in vitro model of intestinal digestion than polydispersed mixtures of similar conjugates. The mixture may result in less inter-subject variability than polydispersed mixtures of similar conjugates.
    Type: Application
    Filed: June 4, 2001
    Publication date: December 11, 2003
    Inventors: Nnochiri N. Ekwuribe, Christopher H. Price, Aslam M. Ansari, Amy L. Odenbaugh
  • Publication number: 20030228652
    Abstract: Methods for synthesizing proinsulin polypeptides are described that include contacting a proinsulin polypeptide including an insulin polypeptide coupled to one or more peptides by peptide bond(s) capable of being cleaved to yield the insulin polypeptide with an oligomer under conditions sufficient to couple the oligomer to the insulin polypeptide portion of the proinsulin polypeptide and provide a proinsulin polypeptide-oligomer conjugate, and cleaving the one or more peptides from the proinsulin polypeptide-oligomer conjugate to provide the insulin polypeptide-oligomer conjugate. Methods of synthesizing proinsulin polypeptide-oligomer conjugates are also provided as are proinsulin polypeptide-oligomer conjugates. Methods of synthesizing C-peptide polypeptide-oligomer conjugates and other pro-polypeptide-oligomer conjugates are also provided.
    Type: Application
    Filed: March 17, 2003
    Publication date: December 11, 2003
    Inventors: Balasingam Radhakrishnan, Richard Soltero, Nnochiri N. Ekwuribe, Monica Puskas, Diti Sangal
  • Publication number: 20030229009
    Abstract: Methods for synthesizing proinsulin polypeptides are described that include contacting a proinsulin polypeptide including an insulin polypeptide coupled to one or more peptides by peptide bond(s) capable of being cleaved to yield the insulin polypeptide with an oligomer under conditions sufficient to couple the oligomer to the insulin polypeptide portion of the proinsulin polypeptide and provide a proinsulin polypeptide-oligomer conjugate, and cleaving the one or more peptides from the proinsulin polypeptide-oligomer conjugate to provide the insulin polypeptide-oligomer conjugate. Methods of synthesizing proinsulin polypeptide-oligomer conjugates are also provided as are proinsulin polypeptide-oligomer conjugates. Methods of synthesizing C-peptide polypeptide-oligomer conjugates and other pro-polypeptide-oligomer conjugates are also provided.
    Type: Application
    Filed: March 5, 2003
    Publication date: December 11, 2003
    Inventors: Richard Soltero, Balasingam Radhakrishnan, Nnochiri N. Ekwuribe
  • Publication number: 20030203961
    Abstract: Taxane prodrugs comprise a taxane joined by a hydrolyzable bond to one or more oligomers that comprise a polyethylene glycol moiety. The oligomer preferably further comprises a salt-forming moiety.
    Type: Application
    Filed: March 24, 2003
    Publication date: October 30, 2003
    Inventors: Nnochiri N. Ekwuribe, Christopher H. Price, Gary S. Bartley
  • Publication number: 20030144468
    Abstract: Methods of synthesizing a substantially monodispersed mixture of polymers comprising polyethylene glycol moieties include:
    Type: Application
    Filed: February 14, 2003
    Publication date: July 31, 2003
    Inventors: Nnochiri N. Ekwuribe, Christopher H. Price, Aslam M. Ansari, Amy L. Odenbaugh
  • Publication number: 20030087808
    Abstract: Methods for synthesizing proinsulin polypeptides are described that include a contacting a proinsulin polypeptide including an insulin polypeptide coupled to one or more peptides by peptide bond(s) capable of being cleaved to yield the insulin polypeptide with an oligomer under conditions sufficient to couple the oligomer to the insulin polypeptide portion of the proinsulin polypeptide and provide a proinsulin polypeptide-oligomer conjugate, and cleaving the one or more peptides from the proinsulin polypeptide-oligomer conjugate to provide the insulin polypeptide-oligomer conjugate. Methods of synthesizing proinsulin polypeptide-oligomer conjugates are also described as are proinsulin polypeptide-oligomer conjugates. Methods of synthesizing C-peptide polypeptide-oligomer conjugates are also described.
    Type: Application
    Filed: December 21, 2001
    Publication date: May 8, 2003
    Inventors: Richard Soltero, Balasingam Radhakrishnan, Nnochiri N. Ekwuribe
  • Publication number: 20030083232
    Abstract: Pharmaceutical compositions that include an insulin drug-oligomer conjugate, a fatty acid component, and a bile salt component are described. The insulin drug is covalently coupled to an oligomeric moiety. The fatty acid component and the bile salt component are present in a weight-to-weight ratio of between 1:5 and 5:1. Methods of treating an insulin deficiency in a subject in need of such treatment using such pharmaceutical compositions are also provided, as are methods of providing such pharmaceutical compositions.
    Type: Application
    Filed: September 5, 2002
    Publication date: May 1, 2003
    Inventors: Richard Soltero, Balasingham Radhakrishnan, Nnochiri N. Ekwuribe, Bruce Rehlander, Anthony Hickey, Li Li Bovet
  • Publication number: 20030069170
    Abstract: Pharmaceutical compositions that include a drug-oligomer conjugate, a fatty acid component, and a bile salt component are described. The drug is covalently coupled to an oligomeric moiety. The fatty acid component and the bile salt component are present in a weight-to-weight ratio of between 1:5 and 5:1. Methods of treating diseases in a subject in need of such treatment using such pharmaceutical compositions are also provided, as are methods of providing such pharmaceutical compositions.
    Type: Application
    Filed: September 5, 2002
    Publication date: April 10, 2003
    Inventors: Richard Soltero, Nnochiri N. Ekwuribe, Foyeke Opawale, Bruce Rehlander, Anthony Hickey, Bovet Li Li
  • Patent number: 6541508
    Abstract: Taxane prodrugs comprise a taxane joined by a hydrolyzable bond to one or more oligomers that comprise a polyethylene glycol moiety. The oligomer preferably further comprises a salt-forming moiety.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: April 1, 2003
    Assignee: Nobex Corporation
    Inventors: Nnochiri N. Ekwuribe, Christopher H. Price, Gary S. Bartley
  • Publication number: 20030060606
    Abstract: A mixture of conjugates in which each conjugate in the mixture comprises a calcitonin drug coupled to an oligomer that includes a polyalkylene glycol moiety is disclosed. The mixture may lower serum calcium levels in a subject by 10, 15 or even 20 percent or more. Moreover, the mixture may be more effective at surviving an in vitro model of intestinal digestion than non-conjugated calcitonin. Furthermore, the mixture may exhibit a higher bioavailability than non-conjugated calcitonin.
    Type: Application
    Filed: June 4, 2001
    Publication date: March 27, 2003
    Inventors: Nnochiri N. Ekwuribe, Christopher H. Price, Aslam M. Ansari, Amy L. Odenbaugh
  • Publication number: 20030050228
    Abstract: Methods of treating diabetes mellitus in a patient in need of such treatment include administering an effective amount of an insulin drug to the patient in order to treat diabetes mellitus in the patient. Methods according to the present invention may “activate” the liver, potentially restoring normal glucose homeostasis to individuals suffering from diabetes mellitus.
    Type: Application
    Filed: February 13, 2002
    Publication date: March 13, 2003
    Inventors: Nnochiri N. Ekwuribe, Christopher H. Price, James Gordon Still, Jennifer Ann Filbey
  • Publication number: 20030045742
    Abstract: Methods of synthesizing an acylanilide include contacting a compound having the structure of Formula I: 1
    Type: Application
    Filed: October 10, 2002
    Publication date: March 6, 2003
    Inventors: Nnochiri N. Ekwuribe, Kenneth D. James