Process for the preparation of respirable particles
Patent 6221398 Issued on April 24, 2001. Estimated Expiration Date: 
July 10, 2016. 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 10, 2016. 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 ReferencesMethod for making uniformly-sized particles from insoluble compounds Aerosol carriers Crystallization method to improve crystal structure and size Process for conditioning substances Patent #: 5709884 InventorsAssigneeApplicationNo. 669477 filed on 07/10/1996US Classes:424/489, Particulate form (e.g., powders, granules, beads, microcapsules, and pellets)424/499, Contains proteins or derivative or polysaccharides or derivative514/951POWDERS, GRANULES OR PARTICLES OF SPECIFIED MESH OR PARTICLE SIZEExaminersPrimary: Page, Thurman K.Assistant: Seidleck, Brian K. Attorney, Agent or FirmForeign Patent References
International ClassesA61K 009/14A61K 009/16 Foreign Application Priority Data1995-04-13 SEAbstractA process for producing a pharmaceutical powder for inhalation comprising crystalline particles of an inhalation compound, comprising dissolving an inhalation compound in a solvent; and introducing the solution containing the inhalation compound in droplet form or as a jet stream into an anti-solvent which is miscible with the solvent and which is under agitation.Other References
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