Multiphase liposomal drug delivery system
September 10, 2005. 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 3645911 3804776 Method of preparing a controlled release liquid pharmaceutical composition Topical steroid formulation in form of lotion or cream Process for the preparation of liposomes Method of encapsulating biologically active materials in lipid vesicles Immunoassay products and methods Process and device for producing bilayer vesicles Method of encapsulating biologically active materials in multilamellar lipid vesicles (MLV) Method of preparing giant size liposomes Patent #: 4532089 InventorAssigneeApplicationNo. 06/774266 filed on 09/10/1985US Classes:424/450, Liposomes264/4.6, Solid-walled microcapsule formed by physically removing a constituent (e.g., evaporation, extraction, etc.)428/402.2, Microcapsule with fluid core (includes liposome)436/829, LIPOSOMES (E.G., ENCAPSULATION, ETC.)514/272, Nitrogen bonded directly to the 1,3-diazine at 2-position514/78, Lecithins514/880, HAIR TREATMENT (THERAPEUTIC-SCALP)514/887, Topical Treatment514/944GELExaminersPrimary: Lovering, Richard D.Attorney, Agent or FirmInternational ClassesA61K 9/127 (20060101)A61K 31/415 (20060101) A61K 31/505 (20060101) AbstractThe present invention provides a novel multiphase drug delivery system which comprises:(a) lipid vesicles with a biologically active compound captured therein;(b) a saturated solution of the biologically active compound; and(c) the biologically active compound in solid form.Optionally this composition is dispersed in a hydrocolloid gel.Other References
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