Pharmaceutical preparation for obtaining a highly viscose hydrogel or suspension
Patent 4818517 Issued on April 4, 1989. Estimated Expiration Date: 
January 20, 2007. 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.
January 20, 2007. 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 ReferencesSustained release pharmaceutical composition Method and preparation for administration to the mucosa of the oral or nasal cavity Patent #: 4226848 InventorsAssigneeApplicationNo. 07/004714 filed on 01/20/1987US Classes:424/488, Polysaccharides (e.g., cellulose, etc.)424/486, Synthetic polymer604/36Means moved by person to introduce and remove materialExaminersPrimary: Swisher, Nancy A. B.Attorney, Agent or FirmInternational ClassesA61K 47/36 (20060101)A61K 31/557 (20060101) Foreign Application Priority Data1986-01-24 NLAbstractThe invention relates to a pharmaceutical preparation for obtaining a highly viscose hydrogel or highly viscose suspension which is suitable to be introduced by means of an injection syringe into body cavities, and which hydrogel or suspension contains at least a drug, a polymer which is insoluble or sparingly soluble in water but has the capability of swelling in water and a watersoluble thickening agent in a relatively low quantity. | |
