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|Title:||Medicinal aerosol formulations|
|Abstract:||A self-propelling aerosol formulation which may be free from CFC's which comprises a medicament, 1,1,1,2-tetrafluoroethane, a surface active agent and at least one compound having a higher polarity than 1,1,1,2-tetrafluoroethane.|
|Inventor(s):||Purewal; Tarlochan S. (Leamington Spa, GB2), Greenleaf; David J. (Loughborough, GB2)|
|Assignee:||Riker Laboratories, Inc. (St. Paul, MN)|
Patent Claim Types:|
see list of patent claims
|Formulation; Delivery; Compound;|
|Foriegn Application Priority Data|
|Foreign Country||Foreign Patent Number||Foreign Patent Date|
|United Kingdom||88284773||Dec 06, 1988|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
|Australia||4595689||<disabled in preview>|
|Australia||631155||<disabled in preview>|
|Canada||2004598||<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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