Patents by Inventor Gary G. Liversidge

Gary G. Liversidge 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: 20030054045
    Abstract: Particulate crystalline therapeutic substances are formulated with stabilizers to enhance contact between the crystalline therapeutic substances and the mucosal membranes to provide extended therapeutic effect.
    Type: Application
    Filed: June 21, 2002
    Publication date: March 20, 2003
    Applicant: Elan Pharma International Limited
    Inventors: Gary G. Liversidge, W. Mark Eickhoff, Kathleen J. Illig, Pramod Sarpotdar, Stephen B. Ruddy
  • Patent number: 6432381
    Abstract: Particulate crystalline therapeutic substances are formulated with stabilizers to enhance contact between the crystalline therapeutic substances and the mucosal membranes to provide extended therapeutic effect.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: August 13, 2002
    Assignee: Elan Pharma International Limited
    Inventors: Gary G. Liversidge, W. Mark Eickhoff, Kathleen J. Illig, Pramod Sarpotdar, Stephen B. Ruddy
  • Publication number: 20010006617
    Abstract: Particulate crystalline therapeutic substances are formulated with stabilizers to enhance contact between the crystalline therapeutic substances and the mucosal membranes to provide extended therapeutic effect.
    Type: Application
    Filed: March 11, 1997
    Publication date: July 5, 2001
    Inventors: GARY G. LIVERSIDGE, W. MARK EICKHOFF, KATHLEEN J. ILLIG, PRAMOD SARPOTDAR, STEPHEN B. RUDDY
  • Patent number: 6221400
    Abstract: The present invention describes formulations of nanoparticulate HIV protease inhibitors comprising a cellulosic surface stabilizer. The nanoparticulate formulations have an increased rate of dissolution in vitro, an increased rate of absorption in vivo, a decreased fed/fasted ratio variability, and a decreased variability in absorption. The present invention is also directed to methods of making the novel formulations. In particular, nanoparticulate formulations of HIV type 1 (HIV-1) and type 2 (HIV-2) protease inhibitors are described.
    Type: Grant
    Filed: January 6, 1999
    Date of Patent: April 24, 2001
    Assignee: Elan Pharma International Limited
    Inventors: Gary G. Liversidge, David A. Engers, Mary E. Roberts, Stephen B. Ruddy, Sui-Ming Wong, Shuqian Xu
  • Patent number: 6068858
    Abstract: The present invention describes formulations of nanoparticulate HIV protease inhibitors comprising a cellulosic surface stabilizer. The nanoparticulate formulations have an increased rate of dissolution in vitro, an increased rate of absorption in vivo, a decreased fed/fasted ratio variability, and a decreased variability in absorption. The present invention is also directed to methods of making the novel formulations. In particular, nanoparticulate formulations of HIV type 1 (HIV-1) and type 2 (HV-2) protease inhibitors are described.
    Type: Grant
    Filed: January 6, 1999
    Date of Patent: May 30, 2000
    Assignee: Elan Pharma International Limited
    Inventors: Gary G. Liversidge, David A. Engers, Mary E. Roberts, Stephen B. Ruddy, Sui-Ming Wong, Shuqian Xu
  • Patent number: 6045829
    Abstract: The present invention describes formulations of nanoparticulate HIV protease inhibitors comprising a cellulosic surface stabilizer. The nanoparticulate formulations have an increased rate of dissolution in vitro, an increase rate of absorption in vivo, a decreased fed/fasted ratio variability, and a decreased variability in absorption. The present invention is also directed to methods of making the novel formulations. In particular, nanoparticulate formulations of HIV type 1 (HIV-1) and type 2 (HIV-2) protease inhibitors are described.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: April 4, 2000
    Assignee: Elan Pharma International Limited
    Inventors: Gary G. Liversidge, David A. Engers, Mary E. Roberts, Stephen B. Ruddy, Sui-Ming Wong, Shuqian Xu
  • Patent number: 5834025
    Abstract: Disclosed are methods of intravenous administration of nanoparticulate drug formulations to a mammal to avoid adverse hemodynamic effects: by reducing the rate and concentration of the nanoparticles in the formulations; or by pre-treating the subject with histamine; or by pretreating the subject with a desensitizing amount of the nanoparticulate drug formulations.
    Type: Grant
    Filed: August 14, 1996
    Date of Patent: November 10, 1998
    Assignee: Nanosystems L.L.C.
    Inventors: Lawrence de Garavilla, Elaine M. Liversidge, Gary G. Liversidge
  • Patent number: 5552160
    Abstract: Dispersible particles consisting essentially of a crystalline NSAID having a surface modifier adsorbed on the surface thereof in an amount sufficient to maintain an effective average particle size of less than about 400 nm. Pharmaceutical compositions containing the particles exhibit reduced gastric irritation following oral administration and/or hastened onset of action.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: September 3, 1996
    Assignee: NanoSystems L.L.C.
    Inventors: Gary G. Liversidge, Philip Conzentino, Jr., Kenneth C. Cundy, Pramod P. Sarpotdar
  • Patent number: 5494683
    Abstract: Dispersible particles consisting essentially of a crystalline anticancer agent having a surface modifier adsorbed on the surface thereof in an amount sufficient to maintain an effective average particle size of less than about 1000 nm. Anticancer compositions comprising the particles exhibit reduced toxicity and/or enhanced efficacy, and can be administered by IV bolus injection.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: February 27, 1996
    Assignee: Eastman Kodak Company
    Inventors: Gary G. Liversidge, Elaine Liversidge, Pramod P. Sarpotdar
  • Patent number: 5451393
    Abstract: An X-ray contrast composition comprising particles consisting essentially of a non-radioactive crystalline organic x-ray contrast agent having a surface modifier adsorbed on the surface thereof in an amount sufficient to maintain an effective average particle size of less than 400 nm, and a pharmaceutically acceptable carrier therefor is useful in x-ray diagnostic medical imaging methods. The agents can be delivered to a specific tissue or fluid site, for example, the blood pool, liver or spleen. In one embodiment involving intravenous administration, preferred compositions provide effective imaging of the blood pool for remarkably long times.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: September 19, 1995
    Assignee: Eastman Kodak Company
    Inventors: Gary G. Liversidge, Eugene R. Cooper, J. Michael Shaw, Gregory L. McIntire
  • Patent number: 5399363
    Abstract: Dispersible particles consisting essentially of a crystalline anticancer agent having a surface modifier adsorbed on the surface thereof in an amount sufficient to maintain an effective average particle size of less than about 1000 nm. Anticancer compositions comprising the particles exhibit reduced toxicity and/or enhanced efficacy, and can be administered by IV bolus injection.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: March 21, 1995
    Assignee: Eastman Kodak Company
    Inventors: Gary G. Liversidge, Elaine Liversidge, Pramod P. Sarpotdar
  • Patent number: 5318767
    Abstract: An X-ray contrast composition comprising particles consisting essentially of a non-radioactive crystalline organic x-ray contrast agent having a surface modifier adsorbed on the surface thereof in an amount sufficient to maintain an effective average particle size of less than 400 nm, and a pharmaceutically acceptable carrier therefor is useful in x-ray diagnostic medical imaging methods. The agents can be delivered to a specific tissue or fluid site, for example, the blood pool, liver or spleen. In one embodiment involving intravenous administration, preferred compositions provide effective imaging of the blood pool for remarkably long times.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: June 7, 1994
    Assignee: Sterling Winthrop Inc.
    Inventors: Gary G. Liversidge, Eugene R. Cooper, J. Michael Shaw, Gregory L. McIntire
  • Patent number: 5302401
    Abstract: This invention discloses a composition comprised of nanoparticles having a surface modifier adsorbed on the surface thereof and a cryoprotectant associated therewith, which cryoprotectant is present in an amount sufficient to form a nanoparticle-cryoprotectant composition. A preferred surface modifier is polyvinylpyrrolidone, and a preferred cryoprotectant is a carbohydrate such as sucrose. This invention further discloses a method of making nanoparticles having a surface modifier adsorbed on the surface and a cryoprotectant associated therewith, comprised of contacting said nanoparticles with the cryoprotectant for a time and under conditions sufficient to form a nanoparticle-cryoprotectant composition.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: April 12, 1994
    Assignee: Sterling Winthrop Inc.
    Inventors: Gary G. Liversidge, Christopher P. Phillips, Kenneth C. Cundy
  • Patent number: 5145684
    Abstract: Dispersible particles consisting essentially of a crystalline drug substance having a surface modifier adsorbed on the surface thereof in an amount sufficient to maintain an effective average particle size of less than about 400 nm, methods for the preparation of such particles and dispersions containing the particles. Pharmaceutical compositions containing the particles exhibit unexpected bioavailability and are useful in methods of treating mammals.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: September 8, 1992
    Assignee: Sterling Drug Inc.
    Inventors: Gary G. Liversidge, Kenneth C. Cundy, John F. Bishop, David A. Czekai