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Details for Patent: 5,232,438

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Summary for Patent: 5,232,438

Title: Membrane for electrotransport transdermal drug delivery
Abstract:A membrane capable of inhibiting agent release from a delivery system when no electrical current is flowing and yet provide minimal impedance to electrically-assisted agent delivery, useful both for incorporating into electrotransport agent delivery systems and for use in measuring agent release rates in in vitro testing.
Inventor(s): Theeuwes; Felix (Los Altos, CA), Gyory; J. Richard (Los Altos, CA), Haak; Ronald P. (Cupertino, CA)
Assignee: Alza Corporation (Palo Alto, CA)
Application Number:07/898,618
Patent Claim Types:
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Compound; Delivery; Device; Use;

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International Patent Family for Patent: 5,232,438

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria234130► Subscribe
Austria235284► Subscribe
Australia2987692► Subscribe
Australia4425489► Subscribe
Australia627786► Subscribe
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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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Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.