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Serving leading biopharmaceutical companies globally:

Merck
Boehringer Ingelheim
Johnson and Johnson
US Department of Justice
Dow
Covington
Citi
Fish and Richardson
Medtronic
Cipla

Generated: February 19, 2018

DrugPatentWatch Database Preview

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 Patent Submitted
Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted

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Foreign Priority and PCT Information for Patent: 5,541,171

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom8123573Jul 31, 1981

International Patents Family Members for US Patent 5,541,171

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 17189 ➤ Sign Up
Australia 551173 ➤ Sign Up
Australia 8732482 ➤ Sign Up
Canada 1172570 ➤ Sign Up
Germany 3268277 ➤ Sign Up
Denmark 128283 ➤ Sign Up
Denmark 158931 ➤ Sign Up
European Patent Office 0097651 ➤ Sign Up
Finland 833099 ➤ Sign Up
Finland 85216 ➤ Sign Up
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving hundreds of leading biopharmaceutical companies globally:

Fuji
Dow
Farmers Insurance
UBS
Daiichi Sankyo
Healthtrust
Accenture
Federal Trade Commission
US Department of Justice

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

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