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|Title:||Polyisobutylene adhesives for transdermal devices|
|Abstract:||An in-line adhesive, useful for transdermal delivery devices comprising a mixture of high and low molecular weighted polyisobutylene having a ratio HMW PIB:LMW PIB in the range of about 5-40:95-60 which is substantially free of plasticizers and tackifiers is disclosed. The adhesive finds particular use as a component of a transdermal delivery device for delivering oily non-polar agents such as nicotine, benztropine, secoverine, dexsecoverine, and arecoline.|
|Inventor(s):||Wang; Karly S. (Newark, CA), Osborne; James L. (Mountain View, CA), Hunt; James A. (Fremont, CA), Nelson; Melinda K. (Sunnyvale, CA)|
|Assignee:||Alza Corporation (Palo Alto, CA)|
Patent Claim Types:|
see list of patent claims
|Composition; Delivery; Device;|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
|Austria||134512||<disabled in preview>|
|Australia||630817||<disabled in preview>|
|Australia||7852191||<disabled in preview>|
| This preview shows a limited data set|
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.
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