EP Patent

EP0436370B1 — Controlled release pharmaceutical preparation and method for producing the same

Assigned to Roehm GmbH Darmstadt · Expires 1993-08-04 · 33y expired

What this patent protects

A controlled release pharmaceutical preparation comprising (a) a core containing a pharmaceutically active substance and an organic acid, and (b) a coating film formed on the surface of the core by aqueous coating of a water-insoluble and slightly water-permeable acrylic polymer …

USPTO Abstract

A controlled release pharmaceutical preparation comprising (a) a core containing a pharmaceutically active substance and an organic acid, and (b) a coating film formed on the surface of the core by aqueous coating of a water-insoluble and slightly water-permeable acrylic polymer containing a trimethylammonium-ethyl group, which exhibits well controlled dissolution and release of the pharmaceutically active substance when administered and can maintain the desired blood level of the active substance for a long period of time, and a method for producing the preparation.

Drugs covered by this patent

Patent Metadata

Patent number
EP0436370B1
Jurisdiction
EP
Classification
—
Expires
1993-08-04
Drug substance claim
No
Drug product claim
No
Assignee
Roehm GmbH Darmstadt
Source
FDA Orange Book + USPTO grounding via Google Patents

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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