EP0781546A1 — A multi-layered film preparation
Assigned to Sanwa Kagaku Kenkyusho Co Ltd · Expires 1997-07-02 · 29y expired
What this patent protects
A multi-layered film preparation has a drug containing layer which contains a water-soluble high molecular weight substance as a main base material, has on one surface thereof a layer difficult to dissolve in water, and carries on the other surface an adhesive substance or contai…
USPTO Abstract
A multi-layered film preparation has a drug containing layer which contains a water-soluble high molecular weight substance as a main base material, has on one surface thereof a layer difficult to dissolve in water, and carries on the other surface an adhesive substance or contains therein the adhesive substance in a dispersed state. The film preparation is easy in handling thereof and shows good adhesiveness to the mucous membrane in the oral cavity, even if it has been remarkably moisted, and gives no bad feeling in use.
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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