Pharmaceutical aerosol formulation comprising a medicament, a propellant and a fluorinated surfactant
Patent 5849265 Issued on December 15, 1998. Estimated Expiration Date: 
March 27, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 27, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAerosol compositions containing finely divided solid materials Aerosol drug formulations Fluorine and phosphorous-containing amphiphilic molecules with surfactant properties Patent #: 5344930 InventorsApplicationNo. 809764 filed on 03/27/1997US Classes:424/45, Organic pressurized fluid514/180, 9-position substituted514/263.34, Chalcogen bonded directly to the 2-and 6- positions of the purine ring system (e.g., theophylline, etc.)514/456, Bicyclo ring system having the hetero ring as one of the cyclos (e.g., chromones, etc.)514/653, Hydroxy, bonded directly to carbon, attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding (e.g., beta hydroxy phenethylamines, etc.)514/975CHARACTERIZED BY THE DESIGNATED SURFACTANT USEDExaminersPrimary: Jordan, KimberlyAttorney, Agent or FirmForeign Patent References
International ClassesA61L 009/04A61K 031/56 A61K 031/52 A61K 031/35 A61K 031/135 Foreign Application Priority Data1994-09-28 GBAbstractA pharmaceutical aerosol formulation which comprises particulate medicament, a fluorocarbon of hydrogen-containing chlorofluorocarbon propellant and a surfactant of general formula (I), wherein n is an integer of 1 to 18; m is an integer of 0 to 17; and R1, R2 and R3 are each independently a hydrogen atom or a C1-4 alkyl group.Field of SearchOrganic pressurized fluid9-position substituted Bicyclo ring system having the hetero ring as one of the cyclos (e.g., chromones, etc.) Hydroxy, bonded directly to carbon, attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding (e.g., beta hydroxy phenethylamines, etc.) CHARACTERIZED BY THE DESIGNATED SURFACTANT USED | |
