EP0832643A2 — Stabilization of an unstable retinoid in oil-in-water emulsions for skin care compositions
Assigned to Unilever PLC · Expires 1998-04-01 · 28y expired
What this patent protects
Oil-in-water emulsions containing an unstable retinoid (retinal or C 2 -C 3 ester thereof) in an oil phase. The retinoid is stabilized in the inventive emulsions, despite the presence of from 50% to 98% of an aqueous phase. The emulsions also preferably include a hydroxy acid.
USPTO Abstract
Oil-in-water emulsions containing an unstable retinoid (retinal or C 2 -C 3 ester thereof) in an oil phase. The retinoid is stabilized in the inventive emulsions, despite the presence of from 50% to 98% of an aqueous phase. The emulsions also preferably include a hydroxy acid.
Drugs covered by this patent
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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