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Serving leading biopharmaceutical companies globally:

Cantor Fitzgerald
Harvard Business School
US Department of Justice

Generated: October 24, 2017

DrugPatentWatch Database Preview

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:
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Compound; Composition; Formulation; Use; Process;

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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 Patent Family for Patent: 6,294,572

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Denmark0734382► Subscribe
Estonia03353► Subscribe
China1502621► Subscribe
China1132829► Subscribe
China1142820► Subscribe
Colombia4340619► Subscribe
Czech Republic9601693► Subscribe
Czech Republic289234► Subscribe
Germany69426726► Subscribe
Egypt20597► Subscribe
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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.

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Serving leading biopharmaceutical companies globally:

US Army
Argus Health
Cantor Fitzgerald

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