Propellant mixture for aerosol formulation
Patent 6153173 Issued on November 28, 2000. Estimated Expiration Date: 
July 21, 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.
July 21, 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 ReferencesHydrofluorocarbon compositions as blowing agents for cellular plastics Method of stabilizing aerosol formulations Patent #: 5376359 InventorsAssigneeApplicationNo. 849217 filed on 07/21/1997US Classes:424/45, Organic pressurized fluid424/46, Powder or dust containing514/957, VAPOR EMMITTING COMPOSITION514/958FOR SMOKING OR INHALINGExaminersPrimary: Page, Thurman K.Assistant: Channavajjala, Lakshmi Attorney, Agent or FirmForeign Patent References
International ClassA61K 009/12Foreign Application Priority Data1994-12-10 GBAbstractThis invention relates to aerosol formulations of use in the administration of medicaments by inhalation. In particular, the formulations comprise (a) 1,1,1,2-tetrafluoroethane or 1,1,1,2,3,3,3-heptafluoro-n-propane or mixtures thereof as propellant, (b) 1,1,2,2,3-pentafluoropropane as co-propellant, and (c) particulate medicament. A method of treating respiratory disorders which comprises administration by inhalation of an effective amount of the pharmaceutical aerosol formulation is also described, as well as is a canister which is suitable for delivering the pharmaceutical aerosol formulation. | |
