Patents Represented by Attorney, Agent or Law Firm George C. Wang
  • Propellant compositions of a particulate medicament that are free of solvents
    Patent number: 6582677
    Abstract: Pressurized aerosol composition comprising a liquefied hydrofluorocarbon propellant of formula CxHyFz where x is an integer from 1 to 3, y+z=2x+2, and y and z are both at least 1; from 0.01 to 15% w/w of a particulate medicament dispersed in the liquefied hydrofluorocarbon propellant; and from 0.01 to 10% w/w of a fluorinated surfactant which is soluble in the liquefied hydrofluorocarbon propellant. The pressurized aerosol composition comprises no solvent, other than the liquefied hydrofluorocarbon propellant.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: June 24, 2003
    Assignee: Aventis Pharmaceuticals Inc.
    Inventors: Gerald Steele, Asit Somani, Joseph Geok Paan Lim