DrugPatentWatch

Competitive intelligence on small-molecule drugs and the 80,000 patents covering them

Simple flat-rate subscription plans

Ultimate Plan

$495/ month or  $2,495/ year

Patent: 5,541,170

Summary for Patent: 5,541,170

Title: Orally administrable pharmaceutical compositions
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:08/401,696
Patent Claim Types:
see list of patent claims
Use; Composition; Compound; Dosage form;
Patent PDF download available with subscription

Glossary
Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Warner Chilcott Llc
ASACOL HD
mesalamine
TABLET, DELAYED RELEASE;ORAL021830May 29, 2008RXYes5,541,170<disabled>YTREATMENT OF ULCERATIVE COLITIS
Warner Chilcott Llc
ASACOL
mesalamine
TABLET, DELAYED RELEASE;ORAL019651Jan 31, 1992RXYes5,541,170<disabled>TREATMENT OF ULCERATIVE COLITIS
Warner Chilcott Llc
DELZICOL
mesalamine
CAPSULE, DELAYED RELEASE;ORAL204412Feb 1, 2013RXYes5,541,170<disabled>YTREATMENT OF ULCERATIVE COLITIS
This preview shows a limited data set
Complete access is available with a Subscription
first patents previous patents next patents last patents

Export unavailable in trial.
Subscribe for complete access.

Foreign Priority and PCT Information for Patent: 5,541,170

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

International Patent Family for Patent: 5,541,170

Country Document Number Publication Date
South Africa8205384May 25, 1983
WIPO (PCT)8300435Feb 17, 1983
United States5541171Jul 30, 1996
Norway159696Oct 24, 1988
This preview shows a limited data set
Complete access is available with a Subscription
first patents previous patents next patents last patents

Export unavailable in trial.
Subscribe for complete access.


« Back to Dashboard

DrugPatentWatch Archives

You are viewing the current data set
Select a link below to view the archives:

 2000  2001  2002  2003  2004  2005  2006  2007  2008  2009 
 2010  2011  2012  2013 

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 information. There is no warranty that the information contained herein is error free. 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.

Connect with Social Media:

Follow DrugPatentWatch on Twitter Connect with DrugPatentWatch on Linkedin Drug Patents on LinkedIn

Copyright © 2002-2014 thinkBiotech LLC. ISSN: 2162-2639

Other thinkBiotech sites: BiotechUBiotechBlogJournal of Commercial Biotechnology

`abc