U.S. patents available from 1976 to present.
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Solid fat nanoemulsions as drug delivery vehicles

Patent 5576016 Issued on November 19, 1996. Estimated Expiration Date: Icon_subject November 19, 2013. 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

Pharmaceutical microemulsions
Patent #: 5023271
Issued on: 06/11/1991
Inventor: Vigne, et al.

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Patent #: 5171737
Issued on: 12/15/1992
Inventor: Weiner, et al.

Lipsopheres for controlled delivery of substances
Patent #: 5188837
Issued on: 02/23/1993
Inventor: Domb

Salt film encapsulated perfluorocarbons
Patent #: 5284663
Issued on: 02/08/1994
Inventor: Speaker

Method to reduce particle size growth during lyophilization
Patent #: 5302401
Issued on: 04/12/1994
Inventor: Liversidge, et al.

Red blood cell surrogate
Patent #: 5306508
Issued on: 04/26/1994
Inventor: Kossovsky, et al.

Ophthalmic product Patent #: 5308624
Issued on: 05/03/1994
Inventor: Maincent, et al.

Inventors

Assignee

Application

No. 063613 filed on 05/18/1993

US Classes:

424/450, Liposomes424/489, Particulate form (e.g., powders, granules, beads, microcapsules, and pellets)424/490, Coated (e.g., microcapsules)424/502, Contains waxes, higher fatty acids, higher fatty alcohols428/402.2Microcapsule with fluid core (includes liposome)

Examiners

Primary: Kishore, Gollamudi S.

Attorney, Agent or Firm

Foreign Patent References

  • 0315079 EP. 10/13/1989
  • 0506197 EP. 09/13/1992
  • WO91/07171 WO. 05/13/1991

International Classes

A61K 009/127
A61K 009/16

Abstract

The present invention provides pharmaceutical compositions comprising nanoemulsions of particles comprising a lipid core which is in a solid or liquid crystalline phase at 25° C, stabilized by at least one phospholipid envelope, for the parenteral, oral, intranasal, rectal, or topical delivery of both fat-soluble and water-soluble drugs. Particles have a mean diameter in the range of 10 to 250 nm. A wide variety of drugs and oxygen transporting perfluorocarbons may be encapsulated in the particles. In addition to drug delivery vehicles, the invention provides oxygen transporting blood substitutes, and nanoemulsions for extracorporeal maintenance of tissues prior to transplantation.

Other References

  • CRC Press, Inc., Liposome Technology, 2nd Edition, vol. 1, Chapter 28, p. 501, Liposome Preparation and Related Techniques, edited by Gregory Gregoriadis, Ph.D., "A Large-Scale Method For The Preparation Of Sterile And Nonpyrogenic Liposomal Formulations Of Defined Size Distributions for Clinical Use", Shimon Amselem, Alberto Gabizon, and Yechezkel Barenholz
  • Methods of Biochemical Analysis, vol. 33, D. Glick, editor, J. Wiley & Sons, N.Y., 1988, "Liposomes: Preparation, Characterization, and Preservation", Dov Lichtenberg and Yechezkel Barenholz
  • Journal of Pharmaceutical Sciences, vol. 79, No. 12, Dec. 1990, "Optimization and Upscaling of Doxorubicin-Containing Liposomes for Clinical Use", S. Amselem, A. Gabizon and Y. Barenholz
  • CRC Press, Inc., 1993, Liposome Technology, 2nd Ed., edited by G. Gregoriadis, Ph.D., vol. 1, Chapter 3, p. 49, "Liposome Peparation Using High-Pressure Homogenizers", Martin M. Brandl, Dieter Bachmann, Markus Drechsler, and Kurt H. Bauer
  • Elsevier Science Publishers B.V. (Biomedical Division), 1986, Laboratory Techniques in Biochemistry and Molecular Biology, vol. 3, part 2, edited by R. H. Burdon and P. H. van Knippenberg, "Techniques of Lipidology--Isolation, Analysis and Identification of Lipids", 2nd revision edition, Moris Kate
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