EP1270006A3 — Quinolone derivative pharmaceutical composition and production method therefor
Assigned to Activus Pharma Co Ltd · Expires 2003-02-26 · 23y expired
What this patent protects
A quinolinone derivative pharmaceutical composition comprising a quinolinone derivative represented by the structural formula (I): wherein the quinolinone derivative is in the form of particles, which have an average particle diameter of 0.5 to 10 µm and such a particle size di…
USPTO Abstract
A quinolinone derivative pharmaceutical composition comprising a quinolinone derivative represented by the structural formula (I): wherein the quinolinone derivative is in the form of particles, which have an average particle diameter of 0.5 to 10 µm and such a particle size distribution that particles having a particle diameter of 15 µm or less account for 90% or more of the totality of the particles, and also have a fusion enthalpy of 30 J/g or more, and the surface of the particles are coated with a water-soluble composition containing a water-soluble polymer, can quickly dissolve an active ingredient in the digestive tract and is also superior in long-term storage stability.
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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