CA2229621A1 — Solid, at least two-phase formulations of an opioid analgesic with delayed release
Assigned to BASF SE · Expires 1998-09-12 · 28y expired
What this patent protects
A solid, at least two-phase formulation of at least one opioid analgesic in a matrix, where each of the two phases contains at least one opioid with an in vitro release rate by the Ph.Eur. paddle method of more than 50% by weight of active ingredient after one hour.
USPTO Abstract
A solid, at least two-phase formulation of at least one opioid analgesic in a matrix, where each of the two phases contains at least one opioid with an in vitro release rate by the Ph.Eur. paddle method of more than 50% by weight of active ingredient after one hour.
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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