CA2309597A1 — Sustainedly releasing agents for medicines and sustainedly released medicinal compositions containing the same
Assigned to Hisamitsu Pharmaceutical Co Inc · Expires 1999-05-20 · 27y expired
What this patent protects
A release-sustaining agent for drugs, comprising a non-cross-linked anion-exchange resin represented by general formula (I) and a sustained-release pharmaceutical composition comprising the release-sustaining agent and a lipid lowering agent, wherein R1 represents aralkyl or alky…
USPTO Abstract
A release-sustaining agent for drugs, comprising a non-cross-linked anion-exchange resin represented by general formula (I) and a sustained-release pharmaceutical composition comprising the release-sustaining agent and a lipid lowering agent, wherein R1 represents aralkyl or alkyl; R2 and R3 represent each lower alkyl; R4 represents hydrogen or lower alkyl; X- represents a physiologically acceptable counter ion; n represents 1 to 3; and p represents an average degree of polymerization.
Drugs covered by this patent
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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