Patents by Inventor David Lechuga-Ballesteros

David Lechuga-Ballesteros 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: 8058433
    Abstract: New crystalline forms of lopinavir are disclosed.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: November 15, 2011
    Assignee: Abbott Laboratories
    Inventors: Daniel A. Dickman, Sanjay Chemburkar, James J. Fort, Rodger F. Henry, David Lechuga-Ballesteros, Yuping Niu, William Porter
  • Publication number: 20110243988
    Abstract: This invention provides compositions and methods for stabilizing a live attenuated virus in dried formulations. In particular, compositions and methods of preparing a dried vaccine are provided that stabilize the viability of live vaccines such as measles and adenovirus at room temperature.
    Type: Application
    Filed: October 1, 2010
    Publication date: October 6, 2011
    Inventors: Satoshi Ohtake, Vu Truong-Le, Luisa Yee, Russell A. Martin, David Lechuga-Ballesteros
  • Publication number: 20110132357
    Abstract: Compositions, methods and systems are provided for pulmonary or nasal delivery of two or more active agents via a metered dose inhaler. In one embodiment, the compositions include a suspension medium, active agent particles, and suspending particles, in which the active agent particles and suspending particles form a co-suspension within the suspension medium.
    Type: Application
    Filed: May 28, 2010
    Publication date: June 9, 2011
    Applicant: PEARL THERAPEUTICS, INC.
    Inventors: Reinhard Vehring, Michael Steven Hartman, David Lechuga-Ballesteros, Adrian Edward Smith, Vidya B. Joshi, Sarvajna Kumar Dwivedi
  • Publication number: 20110070309
    Abstract: A method of preparing a pharmaceutical formulation comprises providing a solution comprising a first solvent, a second solvent, an active agent, and an excipient. The second solvent is less polar than the first solvent and the excipient is more soluble in water than the active agent. The first and second solvents are removed from the solution to produce particles comprising the active agent and the excipient. In one version, the excipient comprises an amino acid and/or a phospholipid. A pharmaceutical formulation made by a version of the invention comprises particles comprising an active agent and an excipient which at least partially encapsulates the active agent, wherein the excipient is more soluble in water than the active agent.
    Type: Application
    Filed: November 23, 2010
    Publication date: March 24, 2011
    Applicant: NOVARTIS PHARMA AG
    Inventors: Reinhard Vehring, Danforth P. Miller, David Lechuga-Ballesteros
  • Publication number: 20110064723
    Abstract: This invention provides methods and compositions for stabilizing proteins and vaccines in dried formulations. In particular, a cavitation method and compositions of preparing a dried vaccine are provided that stabilize the viability of live bacteria and live virus vaccines at room temperature.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 17, 2011
    Inventors: Vu Truong-Le, Satoshi Ohtake, Gary Chiueh, Russell A. Martin, Atul Saxena, Binh V. Pham, David Lechuga-Ballesteros
  • Patent number: 7862834
    Abstract: A method of preparing a pharmaceutical formulation comprises providing a solution comprising a first solvent, a second solvent, an active agent, and an excipient. The second solvent is less polar than the first solvent and the excipient is more soluble in water than the active agent. The first and second solvents are removed from the solution to produce particles comprising the active agent and the excipient. In one version, the excipient comprises an amino acid and/or a phospholipid. A pharmaceutical formulation made by a version of the invention comprises particles comprising an active agent and an excipient which at least partially encapsulates the active agent, wherein the excipient is more soluble in water than the active agent.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: January 4, 2011
    Assignee: Novartis Pharma AG
    Inventors: Reinhard Vehring, Danforth P. Miller, David Lechuga-Ballesteros
  • Publication number: 20100226939
    Abstract: This invention provides formulations and methods for stabilizing viruses in liquid and dried formulations. In particular, formulations are provided including Zn2+ cations that stabilize the viability of Rotaviruses. Methods of vaccination include neutralization of gastric contents and administration of the vaccine formulations of the invention.
    Type: Application
    Filed: September 24, 2008
    Publication date: September 9, 2010
    Inventors: Vu Truong-Le, Luisa Yee, David Lechuga-Ballesteros, Satoshi Ohtake
  • Publication number: 20100210676
    Abstract: Methods of modifying the rate of systemic absorption of a drug administered to a subject by a pulmonary route, the method comprising covalently conjugating a hydrophilic polymer to a drug, wherein the drug has a half-life of elimination from the lung of less than about 180 minutes, to form a drug-polymer conjugate, wherein the drug-polymer conjugate has a net hydrophilic character and a weight average molecular weight of from about 50 to about 20,000 Daltons, and wherein the half-life of elimination from the lung of the drug-polymer conjugate is at least about 1.5-fold greater than the half-life of elimination from the lung of the drug, wherein the half-life of elimination from the lung is measured by bronchoalveolar lavage followed by assaying residual lung material.
    Type: Application
    Filed: February 22, 2010
    Publication date: August 19, 2010
    Inventors: C. Simone Fishburn, David Lechuga-Ballesteros, Tacey Viegas, Mei-Chang Kuo, Yuan Song, Hema Gursahani, Chester Leach
  • Publication number: 20090117193
    Abstract: The present invention provides a highly dispersible formulation comprising an active agent and a dipeptide or tripeptide comprising at least two leucyl residues. The composition of the invention possesses superior aerosol properties and is thus preferred for aerosolized administration to the lung. Also provided are a method for (i) increasing the dispersibility of an active-agent containing formulation for administration to the lung, and (ii) delivery of the composition to the lungs of a subject.
    Type: Application
    Filed: December 23, 2008
    Publication date: May 7, 2009
    Applicant: Nektar Therapeutics
    Inventors: Mei-chang Kuo, David Lechuga-Ballesteros
  • Patent number: 7482024
    Abstract: The present invention provides a highly dispersible formulation comprising an active agent and a dipeptide or tripeptide comprising at least two leucyl residues. The composition of the invention possesses superior aerosol properties and is thus preferred for aerosolized administration to the lung. Also provided are a method for (i) increasing the dispersibility of an active-agent containing formulation for administration to the lung, and (ii) delivery of the composition to the lungs of a subject.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: January 27, 2009
    Assignee: Nektar Therapeutics
    Inventors: Mei-chang Kuo, David Lechuga-Ballesteros
  • Patent number: 7326691
    Abstract: A composition includes particles including at least about 95 wt % of amphotericin B, wherein the particles have a mass median diameter ranging from about 1.1 ?m to about 1.9 ?m. Another composition also includes particles including at least about 95 wt % of amphotericin B, wherein at least about 80 wt % of the particles have a geometric diameter ranging from about 1.1 ?m to about 1.9 ?m. Yet another composition includes particles including amphotericin B, wherein the particles have a mass median diameter less than about 1.9 ?m, and wherein the amphotericin B has a crystallinity level of at least about 20%. Unit dosage forms, delivery systems, and methods may involve similar compositions.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: February 5, 2008
    Assignee: Nektar Therapeutics
    Inventors: Sarma Duddu, Srinivas Palakodaty, David Lechuga-Ballesteros, Danforth Miller, Alan R. Kugler, Christopher Frantz, Trixie Tan, Richard Malcolmson, Keith Washco, Theresa Sweeney, Thomas E. Tarara, Sarvajna Dwivedi, Michael A. Eldon
  • Publication number: 20070027172
    Abstract: New crystalline forms of lopinavir are disclosed.
    Type: Application
    Filed: October 2, 2006
    Publication date: February 1, 2007
    Inventors: Daniel Dickman, Sanjay Chemburkar, James Fort, Rodger Hanry, David Lechuga-Ballesteros, Yuping Niu, William Porter
  • Publication number: 20060182692
    Abstract: Methods of modifying the rate of systemic absorption of a drug administered to a subject by a pulmonary route, the method comprising covalently conjugating a hydrophilic polymer to a drug, wherein the drug has a half-life of elimination from the lung of less than about 180 minutes, to form a drug-polymer conjugate, wherein the drug-polymer conjugate has a net hydrophilic character and a weight average molecular weight of from about 50 to about 20,000 Daltons, and wherein the half-life of elimination from the lung of the drug-polymer conjugate is at least about 1.5-fold greater than the half-life of elimination from the lung of the drug, wherein the half-life of elimination from the lung is measured by bronchoalveolar lavage followed by assaying residual lung material.
    Type: Application
    Filed: January 30, 2006
    Publication date: August 17, 2006
    Inventors: C. Fishburn, David Lechuga-Ballesteros, Tacey Viegas, Mei-Chang Kuo, Yuan Song, Hema Gursahani, Chester Leach
  • Publication number: 20060160871
    Abstract: One or more embodiments of the invention provide various novel formulations, and tablet dosage forms, comprising losartan that are non-crystalline, stable, and/or otherwise improvements over known losartan formulations. One or more embodiments of the invention further provide methods for preparing the formulation, methods for preparing the tablet dosage form, and to methods of administering the tablet dosage and/or formulation comprising losartan. The losartan-containing formulations may be administered to a user to treat hypertension, and related conditions.
    Type: Application
    Filed: December 6, 2005
    Publication date: July 20, 2006
    Applicant: Nektar Therapeutics
    Inventors: Srinivas Palakodaty, Jiang Zhang, Andreas Kordikowski, Linda Daintree, Sarma Duddu, Alan Kugler, Herm Snyder, David Lechuga-Ballesteros, Nagesh Palepu, Michael Eldon
  • Publication number: 20060039985
    Abstract: A powder containing methotrexate particles in liquid crystal form suitable for inhalation.
    Type: Application
    Filed: April 27, 2005
    Publication date: February 23, 2006
    Inventors: David Bennett, David Lechuga-Ballesteros
  • Publication number: 20060025355
    Abstract: A composition includes particles including at least about 95 wt % of amphotericin B, wherein the particles have a mass median diameter ranging from about 1.1 ?m to about 1.9 ?m. Another composition also includes particles including at least about 95 wt % of amphotericin B, wherein at least about 80 wt % of the particles have a geometric diameter ranging from about 1.1 ?m to about 1.9 ?m. Yet another composition includes particles including amphotericin B, wherein the particles have a mass median diameter less than about 1.9 ?m, and wherein the amphotericin B has a crystallinity level of at least about 20%. Unit dosage forms, delivery systems, and methods may involve similar compositions.
    Type: Application
    Filed: June 21, 2005
    Publication date: February 2, 2006
    Applicant: Nektar Therapeutics
    Inventors: Sarma Duddu, Srinivas Palakodaty, David Lechuga-Ballesteros, Danforth Miller, Alan Kugler, Christopher Frantz, Trixie Tan, Richard Malcomson, Keith Washco, Theresa Sweeney, Thomas Tarara, Sarvajna Dwivedi, Michael Eldon
  • Publication number: 20060018840
    Abstract: An aerosolizable formulation comprises free-base nicotine, an organic acid, and a hydrofluoroalkane propellant. The organic acid is present in a mole ratio with said nicotine in a range of about 0.25:1 (organic acid:nicotine) to about 4:1 (organic acid:nicotine). The organic acid and said free-base nicotine form a nicotine salt. An equivalent mixture of free-base nicotine and organic acid in water has a pH between about pH 3.0 and about pH 9.0. The aerosolizable formulation is aerosolizable, for example, by a metered dose inhaler for administration to a user.
    Type: Application
    Filed: June 28, 2005
    Publication date: January 26, 2006
    Applicant: Nektar Therapeutics
    Inventors: David Lechuga-Ballesteros, Mei-Chang Kuo, Yuan Song, Blaine Bueche
  • Publication number: 20050147567
    Abstract: The present invention provides a highly dispersible formulation comprising an active agent and a dipeptide or tripeptide comprising at least two leucyl residues. The composition of the invention possesses superior aerosol properties and is thus preferred for aerosolized administration to the lung. Also provided are a method for (i) increasing the dispersibility of an active-agent containing formulation for administration to the lung, and (ii) delivery of the composition to the lungs of a subject.
    Type: Application
    Filed: November 10, 2004
    Publication date: July 7, 2005
    Inventors: Mei-Chang Kuo, David Lechuga-Ballesteros
  • Publication number: 20050124810
    Abstract: New crystalline forms of lopinavir are disclosed.
    Type: Application
    Filed: November 9, 2004
    Publication date: June 9, 2005
    Inventors: Daniel Dickman, Sanjay Chemburkar, James Fort, Rodger Henry, David Lechuga-Ballesteros, Yuping Niu, William Porter
  • Patent number: 6864369
    Abstract: New crystalline forms of lopinavir are disclosed.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: March 8, 2005
    Assignee: Abbott Laboratories
    Inventors: Daniel A. Dickman, Sanjay Chemburkar, James J. Fort, Rodger F. Henry, David Lechuga-Ballesteros, Yuping Niu, William Porter