EP0386967A2 — A drug-release controlling coating material for long acting formulations
Assigned to Yamanouchi Pharmaceutical Co Ltd · Expires 1990-09-12 · 36y expired
What this patent protects
A coating material for controlling drug release, useful for long acting formulations (e.g. for once-a-day administration), and a long acting granular composition comprising a drug (especially one conventionally difficult to prepar in long acting form) coated with the coating mate…
USPTO Abstract
A coating material for controlling drug release, useful for long acting formulations (e.g. for once-a-day administration), and a long acting granular composition comprising a drug (especially one conventionally difficult to prepar in long acting form) coated with the coating material. This composition may be mixed with other granular drug formulations. The drug-release controlling coating material may comprise, in a specific ratio, specific water-insoluble and low water-permeability polymer and two materials differing from each other in the pH-dependency of their solubility (pH-dependent polymer materials).
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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