EP Patent

EP1698630A8 — New polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations

Assigned to Alfasigma SpA · Expires 2006-10-25 · 20y expired

What this patent protects

Crystalline polymorphous forms of the rifaximin (INN) antibiotic named rifaximin δ and rifaximin ε useful in the production of medicinal preparations containing rifaximin for oral and topical use and obtained by means of a crystallization process carried out by hot-dissolving the…

USPTO Abstract

Crystalline polymorphous forms of the rifaximin (INN) antibiotic named rifaximin δ and rifaximin ε useful in the production of medicinal preparations containing rifaximin for oral and topical use and obtained by means of a crystallization process carried out by hot-dissolving the raw rifaximin in ethyl alcohol and by causing the crystallization of the product by addition of water at a determinate temperature and for a determinate period of time, followed by a drying carried out under controlled conditions until reaching a settled water content in the end product, are the object of the invention.

Drugs covered by this patent

Patent Metadata

Patent number
EP1698630A8
Jurisdiction
EP
Classification
—
Expires
2006-10-25
Drug substance claim
No
Drug product claim
No
Assignee
Alfasigma SpA
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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