Phospholipid delivery system
Patent 5306483 Issued on April 26, 1994. Estimated Expiration Date: 
September 4, 2012. 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.
September 4, 2012. 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 ReferencesProcess for preparing freeze-dried liposome compositions Process for making lipid membrane structures Production of pulverulent mixtures of lipidic and hydrophobic constituents Microcrystals comprising an active substance having an affinity for phospholipids, and at least one phospholipid, process of preparation Patent #: 4973465 InventorAssigneeApplicationNo. 940496 filed on 09/04/1992US Classes:424/45, Organic pressurized fluid424/450LiposomesExaminersPrimary: Page, Thurman K.Assistant: Bawa, Raj Attorney, Agent or FirmInternational ClassA61K 009/12AbstractA process to prepare lipid crystalline figures in chloro or hydro fluorocarbon propellants or mixtures thereof for the aerosol delivery of therapeutically active substances which form amorphous films on delivery and which can be suspended in aqueous media to serve as a drug delivery system or, when used without therapeutically active substance, as an artificial tear. | |
