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Generated: April 27, 2017

DrugPatentWatch Database Preview

Details for Patent: 5,775,321

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Summary for Patent: 5,775,321

Title: Seal configuration for aerosol canister
Abstract:A dual seal configuration for an aerosol canister containing a medicinal aerosol formulation. The canister includes a vial body and valve ferrule sealed by first and second sealing members to form a chamber that contains the medicinal aerosol formulation. The dual seal configuration reduces leakage of contents, and is particularly helpful where the formulation includes hydrofluorocarbon propellant and an ethanol cosolvent. The first seal can be selected to be a barrier to the formulation components, while the second seal can be relatively more labile to such components.
Inventor(s): Alband; Todd D. (Eagan, MN)
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Application Number:08/361,719
Patent Claim Types:
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Formulation; Device;

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International Patent Family for Patent: 5,775,321

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office0697002► Subscribe
Australia6665994► Subscribe
Canada2161632► Subscribe
Germany69406916► Subscribe
Germany69701051► 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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