| 摘要 |
1511614 Osmotically driven dispenser ALZA CORP 13 Aug 1976 [8 Sept 1975] 33833/76 Heading A5B [Also in Division Bl] An osmotically driven dispenser for dispensing an active agent composition to an environment that contains a fluid in which the active agent composition is soluble comprises an inner core formed of the active agent composition, an outer wall surrounding the core that is permeable to the fluid and substantially impermeable to the active agent composition and an outlet passageway in the wall through which the active agent composition in solution is dispensed and is characterised in that the core is made of a microporous material containing the active agent composition. Reference has been directed by the comptroller to Specification 1415210 |
