GB Patent

GB2307857A — An effervescent tablet containing tramadol

Assigned to Euro Celtique SA · Expires 1997-06-11 · 29y expired

What this patent protects

An effervescent pharmaceutical formulation contains tramadol, or pharmaceutically acceptable salt thereof, and an acid base couple which preferably comprises citric acid or tartaric acid and sodium hydrogen carbonate, sodium carbonate or sodium biphosphinate.

USPTO Abstract

An effervescent pharmaceutical formulation contains tramadol, or pharmaceutically acceptable salt thereof, and an acid base couple which preferably comprises citric acid or tartaric acid and sodium hydrogen carbonate, sodium carbonate or sodium biphosphinate.

Drugs covered by this patent

Patent Metadata

Patent number
GB2307857A
Jurisdiction
GB
Classification
—
Expires
1997-06-11
Drug substance claim
No
Drug product claim
No
Assignee
Euro Celtique SA
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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