Deeper Knowledge, Faster

  • Analyze global market entry opportunities
  • Identify first generic entrants
  • Uncover prior art in expired and abandoned patents

Upgrade to enjoy subscriber-only features like email alerts and data export. See the Plans and Pricing

Serving leading biopharmaceutical companies globally:

Boehringer Ingelheim
US Department of Justice

Generated: November 22, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,894,240

« Back to Dashboard

Summary for Patent: 4,894,240

Title: Controlled absorption diltiazem formulation for once-daily administration
Abstract:A diltiazem pellet formulation for oral administration comprises a core of diltiazem or a pharmaceutically acceptable salt thereof in association with an organic acid, and a multi-layer membrane surrounding the core and containing a major proportion of a pharmaceutically acceptable film-forming, water insoluble synthetic polymer and a minor proportion of a pharmaceutically acceptable film-forming, water soluble synthetic polymer. The number of layers in the membrane and the ratio of the water soluble to water insoluble polymer being effective to permit release of the diltiazem from the pellet at a rate allowing controlled absorption thereof over a twenty four hour period following oral administration.
Inventor(s): Geoghegan; Edward J. (Athlone, IE), Mulligan; Seamus (Athlone, IE), Panoz; Donald E. (Tuckerstown, BM)
Assignee: Elan Corporation plc (Athlone, IE)
Application Number:07/121,225
Patent Claim Types:
see list of patent claims
Formulation; Compound; Dosage form; Device; Composition;

No matches for this query

International Patent Family for Patent: 4,894,240

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Spain2194832► Subscribe
Ireland833057► Subscribe
Switzerland662507► Subscribe
Germany3485023► Subscribe
Germany3856555► Subscribe
Denmark575688► Subscribe
Denmark175591► Subscribe
European Patent Office0149920► Subscribe
European Patent Office0320097► Subscribe
European Patent Office0856313► Subscribe
This preview shows a limited data set
Subscribe for full access, or try a Trial

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.

Export unavailable in trial.
Subscribe for complete access.

For more information try a trial or see the database preview and plans and pricing

Serving leading biopharmaceutical companies globally:

Farmers Insurance
Daiichi Sankyo
Chinese Patent Office
Queensland Health
Argus Health

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.

Copyright 2002-2017 thinkBiotech LLC
ISSN: 2162-2639

Secure SSL Encrypted
Privacy and Cookies
Terms & Conditions

Follow DrugPatentWatch:

Google Plus