Method for preparing medicinal aerosol formulation containing coated medicament
Patent 5348730 Issued on September 20, 1994. Estimated Expiration Date: 
March 17, 2013. 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 17, 2013. 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 References 3014844 Aerosol propellant compositions Aerosol compositions containing finely divided solid materials Aerosol application of encapsulated materials Nedocromil calcium and use thereof in treatment of reversible obstructive airways disease Methods of preparing pro-liposome dispersions and aerosols Patent #: 5141674 InventorsApplicationNo. 838747 filed on 03/17/1993US Classes:424/45, Organic pressurized fluid424/43, EFFERVESCENT OR PRESSURIZED FLUID CONTAINING424/46, Powder or dust containing424/489, Particulate form (e.g., powders, granules, beads, microcapsules, and pellets)424/490, Coated (e.g., microcapsules)424/498, Containing waxes, higher fatty acids, higher fatty alcohols, or derivatives thereof427/2.14, Particulate or unit-dosage-article base (e.g., tablet, pill, pellet, capsule, liposome, powder, controlled-release implant, suppository; excluding transdermal patch)514/951, POWDERS, GRANULES OR PARTICLES OF SPECIFIED MESH OR PARTICLE SIZE514/975CHARACTERIZED BY THE DESIGNATED SURFACTANT USEDExaminersPrimary: Page, Thurman K.Assistant: Harrison, Robert H. Attorney, Agent or FirmForeign Patent References
International ClassesA61K 009/12A61K 009/72 Foreign Application Priority Data1989-09-20 GBAbstractA method for preparing a self-propelling, powder dispersing aerosol composition comprising at least 0.0001% by weight of a finely-divided solid medicament coated with a non-perfluorinated surface active dispersing agent which constitutes at least 0.0001% by weight of the coated solid material, and suspended in an aerosol propellant in which the non-perfluorinated surface-active dispersing agent is substantially insoluble. Propellant-insoluble non-perfluorinated surfactants are used to prepare stable dispersions of powdered medicament by way of pre-coating the medicament with the surfactant prior to admixture with propellant.Field of SearchEFFERVESCENT OR PRESSURIZED FLUID CONTAININGOrganic pressurized fluid Powder or dust containing Particulate form (e.g., powders, granules, beads, microcapsules, and pellets) Coated (e.g., microcapsules) Containing waxes, higher fatty acids, higher fatty alcohols, or derivatives thereof POWDERS, GRANULES OR PARTICLES OF SPECIFIED MESH OR PARTICLE SIZE CHARACTERIZED BY THE DESIGNATED SURFACTANT USED | |
