Water-in-oil-in-water compositions

Patent 5656280 Issued on August 12, 1997. Estimated Expiration Date:

December 6, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Multiple emulsion having a form of water/oil/water phase and process for preparation thereof, and multiple emulsion type cosmetics
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Inventors

Assignee

Helene Curtis, Inc.

Application

No. 349904 filed on 12/06/1994

US Classes:

424/401, Cosmetic, antiperspirant, dentifrice8/405, Hair dyeing8/406, Oxidation dye424/59, TOPICAL SUN OR RADIATION SCREENING, OR TANNING PREPARATIONS424/70.19, Two or more designated surfactant containing424/70.2, Permanent waving or straightening424/70.24, Sulfur containing (sulfates, sulfonates, etc.)424/70.28, Quaternary ammonium salts510/122, Silicon, boron, or phosphorus containing organic component514/937, DISPERSION OR EMULSION514/975CHARACTERIZED BY THE DESIGNATED SURFACTANT USED

Examiners

Primary: Lovering, Richard D.

Attorney, Agent or Firm

Marshall, O'Toole, Gerstein, Murray & Borun

Foreign Patent References

58-183611 JP 10/12/1983
WO 92/18227 WO. 10/12/1992
WO 93/00160 WO 01/12/1993
WO 93/07848 WO 04/12/1993
WO 94/01073 WO 01/12/1994
WO 94/02120 WO 02/12/1994

International Classes

A61K 007/13
A61K 007/42
A61K 009/113
B01J 013/00

Abstract

Water-in-oil-in-water multiple emulsion compositions are disclosed. The multiple emulsion compositions comprise an external aqueous phase optionally incorporating a surfactant system capable of forming liquid crystals as an emulsifier. The internal phase comprises a primary water-in-oil emulsion, wherein the primary emulsion comprises a first topically-active compound, a surfactant phase, an oil phase, and water.

Other References

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