U.S. patents available from 1976 to present.
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Hydrophilic form of perfluoro compounds and a method of manufacture

Patent 5407676 Issued on April 18, 1995. Estimated Expiration Date: Icon_subject December 24, 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

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Inventor

Application

No. 997300 filed on 12/24/1992

US Classes:

424/401, Cosmetic, antiperspirant, dentifrice424/400, PREPARATIONS CHARACTERIZED BY SPECIAL PHYSICAL FORM424/484, Matrices514/832, BLOOD SUBSTITUTE514/844, COSMETIC, FACIAL514/873EMOLLIENT

Examiners

Primary: Webman, Edward J.

Attorney, Agent or Firm

Foreign Patent References

  • 0307087 EP. 08/12/1988
  • WO89/08459 EP. 03/12/1989
  • WO90/06969 EP. 11/12/1989
  • WO91/18613 EP. 12/12/1991
  • 2940184 DE. 10/12/1979
  • 88/2770 ZA. 04/12/1988
  • 88/2771 ZA. 04/12/1988
  • 89/9318 ZA. 12/12/1989
  • 90/2139 ZA. 03/12/1990
  • 90/8406 ZA. 08/12/1991

International Classes

A61K 047/26
A61K 031/02
A61K 031/025
A61K 009/10

Abstract

Perfluoro compounds such as C12 F20 ; C12 F27 N; C12 F26 O; C8 F17 Br; and C14 F24 are rendered dispersible colloidally in water or other polar media without the aid of an emulsifying agent by providing a matrix formed by subjecting a feedstock containing perfluoro compounds and carrier materials to conditions which alter the physical and/or chemical structure of the carrier material. The matrix suspends the perfluoro compounds for delivery to a dispersible medium. Thus, a family of new colloidal perfluoro compounds is produced. Methods of producing readily dispersible perfluoro compounds in the absence of emulsifying agents and cosmetics including the same are also disclosed.

Other References

  • Massoud Kazemzadeh, Ph.D., Food Process Design Developing Product Through Extrusion (Jul. 1992)
  • Robert Geyer, "Blood Replacement Preparations," --Encyclopedia of Chemical Technology, Kirk-Othmer, Third Edition, pp. 159-171
  • R. K. Strong, "Oils," Kingzett's Chemical Encyclopedia, pp. 686-690
  • R. K. Strong, "Waxes," Kingzett's Chemical Encyclopedia, pp. 1048, 105
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