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Generated: September 21, 2017
| Title: | Controlled sustained release tablets containing bupropion |
| Abstract: | A controlled sustained release tablet having at least one year shelf life and containing bupropion hydrochloride, hydroxypropyl methylcellulose and cysteine hydrochloride or glycine hydrochloride with the tablet having a surface area to volume ratio to effectively control bupropion hydrochloride release in the body. |
| Inventor(s): | Ludwig; Jennie Sue G. (Greenville, NC), Bass, Jr.; William L. (Farmville, NC), Sutton, Jr.; Joel E. (Greenville, NC) |
| Assignee: | Burroughs Wellcome Co. (Research Triangle Park, NC) |
| Application Number: | 08/105,447 |
|
Patent Claim Types: see list of patent claims | Compound; Dosage form; |
| Foriegn Application Priority Data | ||
| Foreign Country | Foreign Patent Number | Foreign Patent Date |
| United Kingdom | 9217295 | Aug 14, 1992 |
| Country | Document Number | Estimated Expiration | Supplementary Protection Certificate | SPC Country | SPC Expiration | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Canada | 2142320 | ► Subscribe | |||||||||||||||||||||||||||
| Cyprus | 2143 | ► Subscribe | |||||||||||||||||||||||||||
| Germany | 69316015 | ► Subscribe | |||||||||||||||||||||||||||
| European Patent Office | 0656775 | ► Subscribe | CR 2000 00018 | Denmark | ► Subscribe | ||||||||||||||||||||||||
| European Patent Office | 0656775 | ► Subscribe | 28/2000 | Austria | ► Subscribe | ||||||||||||||||||||||||
| Spain | 2111168 | ► Subscribe | |||||||||||||||||||||||||||
| United Kingdom | 9217295 | ► Subscribe | |||||||||||||||||||||||||||
| Greece | 3025794 | ► Subscribe | |||||||||||||||||||||||||||
| Australia | 4725893 | ► Subscribe | |||||||||||||||||||||||||||
| Australia | 677595 | ► 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,
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