EP0050480A2 — Long lasting multi-layered film preparation and process for its production
Assigned to Ono Pharmaceutical Co Ltd · Expires 1982-04-28 · 44y expired
What this patent protects
The present invention provides multi-layered film preparations which comprise one or more water soluble polymer bases, one or more water insoluble polymer bases, one or more plasticizers and one or more prostaglandins, and optionally contain one or more organic acids, and they ar…
USPTO Abstract
The present invention provides multi-layered film preparations which comprise one or more water soluble polymer bases, one or more water insoluble polymer bases, one or more plasticizers and one or more prostaglandins, and optionally contain one or more organic acids, and they are composed of at least two drug release controlling layers (1) and one or more drug storing layers (2, 3). The multi-layered film preparations of the present invention are characterized by that the prostagiandin(s) containing therein exhibit the desired long-lasting release patterns at the concentration required for therapeutic purpose.
Drugs covered by this patent
- Subutex (Buprenorphine Hydrochloride) · Indivior
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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