U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Aqueous emulsion and aerosol delivery system using same

Patent 5145604 Issued on September 8, 1992. Estimated Expiration Date: Icon_subject February 6, 2012. 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.

Patent References

Aerosol preparation
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Issued on: 03/27/1984
Inventor: Albanese

Aerosol preparation
Patent #: 4439343
Issued on: 03/27/1984
Inventor: Albanese

Non-flammable aerosol propellant microemulsion system
Patent #: 4536323
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Nonionic surfactant type vesicle dispersion
Patent #: 4536324
Issued on: 08/20/1985
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Preparation of non-flammable aerosol propellant microemulsion system
Patent #: 4655959
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Aqueous dispersions of lipid spheres and compositions containing the same
Patent #: 4772471
Issued on: 09/20/1988
Inventor: Vanlerberghe ,   et al.

Treatment of cellulosic materials
Patent #: 4860685
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Inventor: Smith

Composition using salt form of organic acid derivative of alpha-tocopheral
Patent #: 4861580
Issued on: 08/29/1989
Inventor: Janoff ,   et al.

Hiar cosmetic composition
Patent #: 4885159
Issued on: 12/05/1989
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Paucilamellar lipid vesicles
Patent #: 4911928
Issued on: 03/27/1990
Inventor: Wallach

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Inventor

Assignee

Application

No. 832168 filed on 02/06/1992

US Classes:

516/71, The compound contains repeating -(OCnHn)- (i.e., repeating unsubstituted oxyalkylene)424/450, Liposomes428/402.2, Microcapsule with fluid core (includes liposome)514/938Oil-water type

Examiners

Primary: Lovering, Richard D.
Assistant: Bhat, N.

Foreign Patent References

  • 2078543A GB. 01/13/1982
  • 2166107A GB. 04/13/1986

International Classes

C09K 003/00
B01J 013/00

Abstract

An aqueous emulsion system containing vesicular structures which provides a delivery system for a variety of active ingredients. The vesicular structures of the emulsion provide a reservoiring or slow-release effect for the active ingredient or for a propellant, enabling an aerosol delivery system to be effective with a very low VOC content.

Other References

  • Spontaneous Vesicle Formation in Aqueous Mixtures of Single-Tailed Surfactants, by Kaler et al., Science, Sep. 22, 1989, p. 137
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