Encapsulated topical delivery system
Patent 4917892 Issued on April 17, 1990. Estimated Expiration Date: 
June 28, 2008. 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.
June 28, 2008. 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 of preparing a controlled release liquid pharmaceutical composition Controlled release article Method of encapsulating biologically active materials in multilamellar lipid vesicles (MLV) Pharmaceutical preparations Nitrofurantoin dosage form Patent #: 4772473 InventorsAssigneeApplicationNo. 212492 filed on 06/28/1988US Classes:424/401, Cosmetic, antiperspirant, dentifrice424/78.02, TOPICAL BODY PREPARATION CONTAINING SOLID SYNTHETIC ORGANIC POLYMER AS DESIGNATED ORGANIC ACTIVE INGREDIENT (DOAI)424/423, Surgical implant or material424/455, Containing emulsions, dispersions, or solutions424/486, Synthetic polymer424/487Acrylic acid and derivativesExaminersPrimary: Page, Thurman K.Attorney, Agent or FirmInternational ClassA61K 006/00AbstractDelivery system for topical application comprising a highly viscous carrier containing dissolved or dispersed and microencapsulated topically-active agents providing immediate and sustained release of the topically-active agent to localized body sites.Field of SearchPressure sensitive adhesive meansTransdermal or percutaneous Capsules (e.g., of gelatin, of chocolate, etc.) Containing emulsions, dispersions, or solutions Matrices Surgical implant or material Errodable, resorbable, or dissolving Synthetic polymer Acrylic acid and derivatives Diffusion barrier is matrix | |
