Make Better Decisions

  • Analyze global market entry opportunities
  • Identify first generic entrants
  • Obtain formulation and manufacturing information

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

Serving leading biopharmaceutical companies globally:

Queensland Health
Cantor Fitzgerald

Generated: December 13, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,933,360

« Back to Dashboard

Summary for Patent: 4,933,360

Title: Novel chlorthalidone process and product
Abstract:Water-soluble dispersions of chlorthalidone are prepared by a process comprising: (a) forming a solution comprising a water soluble pharmaceutically acceptable polymeric carrier and a C.sub.1 -C.sub.4 alkanol, (b) dissolving chlorthalidone in the solution thus formed, and (c) removing the C.sub.1 -C.sub.4 alkanol from the solution by evaporation, the amount of said carrier being effective to suppress substantially the formation of the alkyl ether by-product from the reaction of chlorthalidone with the C.sub.1 -C.sub.4 alkanol. A preferred water soluble carrier is polyvinylpyrrolidone and a preferred C.sub.1 -C.sub.4 alkanol is methanol.
Inventor(s): Pandit; Nivedita (Middlebury, CT), Horhota; Stephen T. (Brookfield, CT)
Assignee: Boehringer Ingelheim Pharmaceuticals, Inc. (Ridgefield, CT)
Application Number:06/796,467
Patent Claim Types:
see list of patent claims
Process; Formulation; Composition; Dosage form; Use;

No matches for this query

International Patent Family for Patent: 4,933,360

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria31024► Subscribe
Australia2569684► Subscribe
Australia562929► Subscribe
Canada1212329► Subscribe
German Democratic Republic220225► Subscribe
Germany3467707► Subscribe
Denmark156784► Subscribe
Denmark162878► Subscribe
European Patent Office0125420► Subscribe
Spain530628► 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 plans and pricing

Serving leading biopharmaceutical companies globally:

US Army
Daiichi Sankyo
Johnson and Johnson
Chinese Patent Office
Farmers Insurance

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: