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Details for Patent: 4,465,660

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Summary for Patent: 4,465,660

Title: Sustained release tablet containing at least 95 percent theophylline
Abstract:Non-disintegrating theophylline tablets having a pair of opposing substantially planar surfaces and a very thin cross-section have a high bioavailability on ingestion and a relatively steady release rate permitting a 12 hr. dosing interval for maintenance of non-toxic therapeutic blood theophylline concentrations. Excipients or tableting aids are not required, but trace amounts of a tableting lubricant are preferably included to facilitate continuous large scale production.
Inventor(s): David; Stephen T. (Evansville, IN), Brooke; Dana (Evansville, IN), Gallian; Claude E. (Evansville, IN)
Assignee: Mead Johnson & Company (Evansville, IN)
Application Number:06/451,891
Patent Claim Types:
see list of patent claims
Formulation; Dosage form; Composition;

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International Patent Family for Patent: 4,465,660

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria380789► Subscribe
AustriaA202081► Subscribe
Australia549299► Subscribe
Australia7020581► Subscribe
Belgium888697► 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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