Details for Patent: 5,541,171
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Summary for Patent: 5,541,171
Title: | Orally administrable pharmaceutical composition |
Abstract: | A solid dosage form, such as a capsule or tablet, containing a pharmacologically active agent is coated with an anionic polymer, which is insoluble in gastric juice and in intestinal juice below pH7 but soluble in colonic intestinal juice, in a sufficient amount that the oral dosage form remains intact until it reaches the colon. The preferred anionic polymer is a partly methyl esterified methacrylic acid polymer in which the ratio of free carboxylic groups to ester groups is about 1:2. The invention has particular application to dosage forms of prednisolone and salts thereof, indomethacin, ibuprofen, and, especially, 5-amino-salicylic acid. |
Inventor(s): | Rhodes; John (Cardiff, GB7), Evans; Brian K. (Dinas Powis, GB7) |
Assignee: | Tillotts Pharma AG (Ziefen, CH) |
Application Number: | 08/448,300 |
Patent Claim Types: see list of patent claims | Use; Composition; Compound; Dosage form; |
Drugs Protected by US Patent 5,541,171
Applicant | Tradename | Generic Name | Dosage | NDA | Approval Date | TE | Type | RLD | RS | Patent No. | Patent Expiration | Product | Substance | Delist Req. | Patented / Exclusive Use | Submissiondate |
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>Applicant | >Tradename | >Generic Name | >Dosage | >NDA | >Approval Date | >TE | >Type | >RLD | >RS | >Patent No. | >Patent Expiration | >Product | >Substance | >Delist Req. | >Patented / Exclusive Use | >Submissiondate |
Foreign Priority and PCT Information for Patent: 5,541,171
Foriegn Application Priority Data | ||
Foreign Country | Foreign Patent Number | Foreign Patent Date |
United Kingdom | 8123573 | Jul 31, 1981 |
International Family Members for US Patent 5,541,171
Country | Patent Number | Estimated Expiration | Supplementary Protection Certificate | SPC Country | SPC Expiration |
---|---|---|---|---|---|
Austria | 17189 | ⤷ Try a Trial | |||
Australia | 551173 | ⤷ Try a Trial | |||
Australia | 8732482 | ⤷ Try a Trial | |||
Canada | 1172570 | ⤷ Try a Trial | |||
Germany | 3268277 | ⤷ Try a Trial | |||
Denmark | 128283 | ⤷ Try a Trial | |||
Denmark | 158931 | ⤷ Try a Trial | |||
>Country | >Patent Number | >Estimated Expiration | >Supplementary Protection Certificate | >SPC Country | >SPC Expiration |