GB Patent

GB9701705D0 — Purifying polyunsatured fatty acid glycerides

Assigned to Norsk Hydro ASA · Expires 1997-03-19 · 29y expired

What this patent protects

A composition containing polyunsaturated fatty acid glycerides is purified by means of supercritical fluid fractionation in one or more countercurrent columns operated either with internal reflux achieved by a temperature gradient along the column or with an external reflux achie…

USPTO Abstract

A composition containing polyunsaturated fatty acid glycerides is purified by means of supercritical fluid fractionation in one or more countercurrent columns operated either with internal reflux achieved by a temperature gradient along the column or with an external reflux achieved through external regulation of the pressure, and using as the solvent a mixture of supercritical CO2 and a polar co-solvent. Oligomeric and malodorous impurities in particular can be successfully removed by this process, which also can, if desired, be followed, or preceded, by another supercritical fluid fractionation with supercritical C02 under conditions adjusted so as to favor fractionation of the glyceride components.

Drugs covered by this patent

Patent Metadata

Patent number
GB9701705D0
Jurisdiction
GB
Classification
—
Expires
1997-03-19
Drug substance claim
No
Drug product claim
No
Assignee
Norsk Hydro ASA
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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