EP0147479A1 — A water and drug delivery system for suppository use
Assigned to Merck and Co Inc · Expires 1985-07-10 · 41y expired
What this patent protects
(57) A drug delivery system designed to deliver water and drug to the site of administration is composed of a core (1) of an aqueous solubulizing system in a wax housing (2), which melts at body temperature, surrounded by a matrix (3) of drug and water-dispersible excipients. The…
USPTO Abstract
(57) A drug delivery system designed to deliver water and drug to the site of administration is composed of a core (1) of an aqueous solubulizing system in a wax housing (2), which melts at body temperature, surrounded by a matrix (3) of drug and water-dispersible excipients. The entire unit may also be coated with a semi-permeable membrane (4) to modulate drug release.
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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