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Last Updated: July 8, 2020

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Details for Patent: 5,344,658


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Summary for Patent: 5,344,658
Title: Process and composition using ondansetron
Abstract:The invention relates to a process for reducing the crystal size of ondansetron hydrochloride dihydrate produced by crystallisation from solvent to a size which is suitable for effective distribution in a tablet blend, in particular 100% less that 250 .mu.m. The ondansetron hydrochloride dihydrate is desolvated by drying at elevated temperature and reduced or atmospheric pressure and is then rehydrated.
Inventor(s): Collin; David T. (Ware, GB2)
Assignee: Glaxo Group Limited (London, GB2)
Application Number:08/005,736
Patent Claim Types:
see list of patent claims
Compound; Dosage form; Process; Composition;

Drugs Protected by US Patent 5,344,658

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>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: 5,344,658

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom89148043Jun 28, 1989

International Family Members for US Patent 5,344,658

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 110380   Start Trial
Australia 5787490   Start Trial
Australia 637110   Start Trial
Canada 2019944   Start Trial
Germany 69011786   Start Trial
Denmark 0415522   Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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