EP0074584B1 — Prolonged-action multiple-layer tablets
Assigned to Chugai Pharmaceutical Co Ltd · Expires 1985-08-21 · 41y expired
What this patent protects
A prolonged-action multiple-layer tablet having an increased rate of dissolution of the active ingredient from a given point of time onward is disclosed. The table comprises layer A made of an intimate mixture of a water-insoluble wax that has an average particle size of 10 µm or…
USPTO Abstract
A prolonged-action multiple-layer tablet having an increased rate of dissolution of the active ingredient from a given point of time onward is disclosed. The table comprises layer A made of an intimate mixture of a water-insoluble wax that has an average particle size of 10 µm or less and which is solid at ordinary temperatures, a disintegrator and a binder, and layer B made of an intimate mixture of a water-insoluble wax that has an average particle size of 10 µm or less and which is solid at ordinary temperatures, a disintegrator, a binder and the active ingredient. In the tablet, a quick-release layer containing the active ingredient may be formed on either layer A or B.
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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