Patents by Inventor Stephen Wyn Howells

Stephen Wyn Howells 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).

  • Particulate composition
    Patent number: 7018657
    Abstract: Nanoparticles are prepared from a colloidal system comprising a continuous phase and micelles, the micelles comprising surfactant material. A microemulsion is formed by admixing the colloidal system with a solution of an active material, such as a medicament, dissolved in a solvent wherein the solution forms a disperse phase with the micelles of surfactant material. At least the dispersed phase is quenched to a solid state and the continuous phase and solvent are removed to produce the nanoparticles. The nanoparticles can be incorporated in an aerosol composition suitable for deep lung delivery by means of a metered dose inhaler.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: March 28, 2006
    Assignee: University College Cardiff Consultants Limited
    Inventors: Paul Alfred Dickinson, Ian Walter Kellaway, Stephen Wyn Howells
  • Particulate composition
    Publication number: 20030161886
    Abstract: Nanoparticles are prepared from a colloidal system comprising a continuous phase and micelles, the micelles comprising surfactant material. A microemulsion is formed by admixing the colloidal system with a solution of an active material, such as a medicament, dissolved in a solvent wherein the solution forms a disperse phase with the micelles of surfactant material. At least the dispersed phase is quenched to a solid state and the continuous phase and solvent are removed to produce the nanoparticles. The nanoparticles can be incorporated in an aerosol composition suitable for deep lung delivery by means of a metered dose inhaler.
    Type: Application
    Filed: January 17, 2003
    Publication date: August 28, 2003
    Inventors: Paul Alfred Dickinson, Ian Walter Kellaway, Stephen Wyn Howells