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Generated: June 22, 2017

DrugPatentWatch Database Preview

Details for Patent: 5,693,675

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Summary for Patent: 5,693,675

Title: Alkylated amine polymers
Abstract:The invention relates to alkylated amine polymers and a method for removing bile salts from a patient that includes administering to the patient a therapeutically effective amount of product produced by a process comprising alkylating one or more crosslinked amine polymers, salts or copolymers thereof with at least one alkylating agent. The reaction product is characterized in that: (i) at least some of the nitrogen atoms are unreacted with alkylating agent; and (ii) less than 10 mol % of the nitrogen atoms in the polymer react with the alkylating agent to form quaternary ammonium units.
Inventor(s): Mandeville, III; W. Harry (Lynnfield, MA), Holmes-Farley; Stephen Randall (Arlington, MA)
Assignee: GelTex Pharmaceuticals Inc. (Waltham, MA)
Application Number:08/461,298
Patent Claim Types:
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Compound; Use;

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International Patent Family for Patent: 5,693,675

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria184027► Subscribe
Austria205508► Subscribe
Australia2012399► Subscribe
Australia2556095► Subscribe
Australia2699095► 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 500+ biopharmaceutical companies globally:

Boehringer Ingelheim
Chinese Patent Office
US Army
US Department of Justice

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