Patents by Inventor Steven J. Prestrelski

Steven J. Prestrelski 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: 20040213798
    Abstract: A gel-forming free-flowing powder suitable for use as a vaccine is prepared by spray-drying an aqueous suspension that contains an antigen adsorbed to an aluminum salt adjuvant, a saccharide, an amino acid or a salt thereof, and a colloidal substance. Processes for forming these powder compositions are also described, as well as methods of using the compositions in a vaccination procedure.
    Type: Application
    Filed: May 25, 2004
    Publication date: October 28, 2004
    Applicant: PowderJect Vaccines, Inc.
    Inventors: Yuh-Fun Maa, Lu Zhao, Steven J. Prestrelski
  • Publication number: 20030202978
    Abstract: A process for producing a powder comprises spray freeze-drying an aqueous solution or suspension comprising a pharmaceutical agent, said solution or suspension having a solids content of 20% by weight or more. The spray freeze-dried powder may be administered to a subject via a needleless syringe.
    Type: Application
    Filed: June 10, 2002
    Publication date: October 30, 2003
    Inventors: Yuh-Fun Maa, Steven J. Prestrelski, Terry L. Burkoth
  • Publication number: 20030026842
    Abstract: Hard, dense particles of a pharmaceutical agent, suitable for administration to a subject via a needleless syringe are described. The particles are prepared by a multi step process that entails forming particles of a first size where the particles are an admixture of a pharmaceutical agent and a macromolecular carrier and the admixture has a first glass transition temperature; admixing a plasticizer that lowers the first glass transition temperature of the admixture to a second glass transition temperature which is below the first glass transition temperature; maintaining the articles at a temperature above the second glass transition temperature for a time period adequate to cause the particles to shrink and/or collapse; removing the plasticizer from the particles to yield modified particles having an increased glass transition temperature; recovering the modified particles; and then storing the recovered particles.
    Type: Application
    Filed: June 10, 2002
    Publication date: February 6, 2003
    Inventors: Steven J. Prestrelski, Terry L. Burkoth, Yuh-Fun Maa
  • Publication number: 20020120228
    Abstract: A gel-forming free-flowing powder suitable for use as a vaccine is prepared by spray-drying or spray freeze-drying an aqueous suspension that contains an antigen adsorbed to an aluminum salt or calcium salt adjuvant, a saccharide, an amino acid or a salt thereof, and a colloidal substance. Powder for vaccine purposes are also prepared by spray freeze-drying an aqueous suspension of such an adjuvant having an antigen adsorbed therein. Processes for forming these powder compositions are also described, as well as methods of using the compositions in a vaccination procedure.
    Type: Application
    Filed: June 8, 2001
    Publication date: August 29, 2002
    Inventors: Yuh-Fun Maa, Lu Zhao, Steven J. Prestrelski
  • Patent number: 6235712
    Abstract: This invention relates to stable non-aqueous polar aprotic formulations of peptide compounds. These stable formulations comprise peptide in non-aqueous polar aprotic solvent. They may be stored at elevated temperatures for long periods of time and are especially useful in implantable delivery devices for long term delivery of drug.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: May 22, 2001
    Assignee: ALZA Corporation
    Inventors: Cynthia L. Stevenson, Steven J. Prestrelski
  • Patent number: 6124261
    Abstract: This invention relates to stable non-aqueous polar aprotic formulations of peptide compounds. These stable formulations comprise peptide in non-aqueous polar aprotic solvent. They may be stored at elevated temperatures for long periods of time and are especially useful in implantable delivery devices for long term delivery of drug.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: September 26, 2000
    Assignee: ALZA Corporation
    Inventors: Cynthia L. Stevenson, Steven J. Prestrelski
  • Patent number: 6068850
    Abstract: This invention relates to stable liquid aqueous formulations of peptide compounds at high concentrations. These stable formulations comprise at least about 10% peptide in water. They may be stored at elevated temperatures for long periods of time and are especially useful in implantable delivery devices for long term delivery of drug.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: May 30, 2000
    Assignee: Alza Corporation
    Inventors: Cynthia L. Stevenson, Sally A. Tao, Steven J. Prestrelski, James B. Eckenhoff, deceased, Jeremy C. Wright, John J. Leonard, Jr.
  • Patent number: 6066619
    Abstract: This invention relates to stable non-aqueous protic formulations of peptide compounds. These stable formulations comprise peptide in non-aqueous protic solvent. They may be stored at elevated temperatures for long periods of time and are especially useful in implantable delivery devices for long term delivery of drug.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: May 23, 2000
    Assignee: Alza Corporation
    Inventors: Cynthia L. Stevenson, Sally A. Tao, Steven J. Prestrelski, James B. Eckenhoff, Jeremy C. Wright, John J. Leonard, Jr.
  • Patent number: 5981489
    Abstract: This invention relates to stable non-aqueous protic formulations of peptide compounds. These stable formulations comprise peptide in non-aqueous protic solvent. They may be stored at elevated temperatures for long periods of time and are especially useful in implantable delivery devices for long term delivery of drug.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: November 9, 1999
    Assignee: Alza Corporation
    Inventors: Cynthia L. Stevenson, Sally A. Tao, Steven J. Prestrelski, James B. Eckenhoff, deceased, Jeremy C. Wright, John J. Leonard, Jr.
  • Patent number: 5972369
    Abstract: A sustained release delivery system for delivering a beneficial agent is provided. The system includes a reservoir comprising the beneficial agent and a capillary channel in communication with the reservoir and the exterior of the system for delivering the beneficial agent from the system. The capillary channel has a cross-sectional area and a length selected to deliver the beneficial agent at a predetermined rate. The system may further include an outer surface that is impermeable and non-porous during delivery of the beneficial agent. The beneficial agent may be formulated in a glassy sugar matrix.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: October 26, 1999
    Assignee: ALZA Corporation
    Inventors: Wouter E. Roorda, Keith E. Dionne, James E. Brown, Jeremy C. Wright, Craig R. Davis, Steven J. Prestrelski, Stelios T. Tzannis
  • Patent number: 5932547
    Abstract: This invention relates to stable non-aqueous polar aprotic formulations of peptide compounds. These stable formulations comprise peptide in non- aqueous polar aprotic solvent. They may be stored at elevated temperatures for long periods of time and are especially useful in implantable delivery devices for long term delivery of drug.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: August 3, 1999
    Assignee: ALZA Corporation
    Inventors: Cynthia L. Stevenson, Steven J. Prestrelski
  • Patent number: 5916582
    Abstract: This invention relates to stable liquid aqueous formulations of peptide compounds at high concentrations. These stable formulations comprise at least about 10% peptide in water. They may be stored at elevated temperatures for long periods of time and are especially useful in implantable delivery devices for long term delivery of drug.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: June 29, 1999
    Assignee: ALZA Corporation
    Inventors: Cynthia L. Stevenson, Sally A. Tao, Steven J. Prestrelski, James B. Eckenhoff, deceased, Jeremy C. Wright, John J. Leonard, Jr.
  • Patent number: 5580856
    Abstract: Dried proteins are stabilized against loss of biological activity in formulations by adding an reconstitution stabilizer upon rehydration of the dried protein. A kit for producing and a formulation produced by dissolving the dried composition in a solvent containing the reconstitution stabilizer is also described.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: December 3, 1996
    Inventors: Steven J. Prestrelski, Mei Z. Zhang