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Last Updated: December 9, 2019

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Details for Patent: 6,294,572

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Summary for Patent: 6,294,572
Title: Crystalline N-acetyl neuraminic acid derivatives and process for their preparation
Abstract:Two useful crystal hydrates of 5-acetamido-2,3,4,5-tetradeoxy-4-guanidino-D-glycero-D-galacto-non-2-enopy ranosonic acid have either a low or high aspect ratio. These crystalline N-acetyl neurominic acid derivatives are favored for pharmaceutical formulation because of their physical properties. For example, the low aspect ratio crystal has good flow properties, and the high aspect ratio crystal has a stable water content over time.
Inventor(s): Williamson; Christopher (Stevenage, GB), White; William James (Stevenage, GB), Patel; Vipulkumar (Stevenage, GB)
Assignee: Biota Scientific Management Pty Ltd. (Glen Iris, AU)
Application Number:09/346,583
Patent Claim Types:
see list of patent claims
Compound; Composition; Formulation; Use; Process;

Drugs Protected by US Patent 6,294,572

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: 6,294,572

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom9325841Dec 17, 1993

International Family Members for US Patent 6,294,572

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
African Regional IP Organization (ARIPO) 541   Start Trial
African Regional IP Organization (ARIPO) 9400705   Start Trial
African Regional IP Organization (ARIPO) 9600810   Start Trial
Austria 199255   Start Trial
Australia 1314495   Start Trial
Australia 689185   Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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