Generated: December 17, 2017
DrugPatentWatch Database Preview
Details for Patent: 6,113,938
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Which drugs does patent 6,113,938 protect, and when does it expire?
Summary for Patent: 6,113,938
|Title:|| Beneficial agent delivery system with membrane plug and method for controlling delivery of beneficial agents|
|Abstract:||An osmotic delivery system for controlled delivery of a beneficial agent includes an implant capsule containing a beneficial agent and an osmotic agent which swells on contact with water causing the release of the beneficial agent over time. The osmotic delivery system has a membrane plug which allows water to pass through the plug from an exterior of the capsule while preventing the compositions within the capsule from passing out of the capsule. A delivery rate for delivery of the beneficial agent from the implant capsule is controlled by varying a core diameter of the membrane plug within a constant diameter capsule. The membrane plug has a variable water permeation rate depending on an extent to which the membrane plug is constrained by the capsule walls.|
|Inventor(s):|| Chen; Guohua (Sunnyvale, CA), Lautenbach; Scott (San Mateo, CA), Dionne; Keith (Cambridge, MA), Hom; Lawton (San Francisco, CA) |
|Assignee:|| ALZA Corporation (Mountain View, CA) |
Patent Claim Types:|
see list of patent claims
|Delivery; Dosage form; Device; Use; |
International Patent Family for Patent: 6,113,938
The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
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