EP0190833A2 — Method for producing microcapsule
Assigned to Takeda Pharmaceutical Co Ltd · Expires 1986-08-13 · 40y expired
What this patent protects
Microcapsules are advantageously produced with a high take-up of a water-soluble drug by preparing a W/O emulsion composed of a water-soluble drug-containing solution as the inner aqueous phase and a polymer-containing solution as the oil phase, dispersing said emulsion in an aqu…
USPTO Abstract
Microcapsules are advantageously produced with a high take-up of a water-soluble drug by preparing a W/O emulsion composed of a water-soluble drug-containing solution as the inner aqueous phase and a polymer-containing solution as the oil phase, dispersing said emulsion in an aqueous phase and subjecting the resulting W/O/W emulsion to an in-water drying, wherein the viscosity of the W/0 emulsion used in preparing the W/O/W emulsion is adjusted to about 150 to about 10,000 centipoises.
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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