Functionalized cubic liquid crystalline phase materials and methods for their preparation and use

Patent 6936187 Issued on August 30, 2005. Estimated Expiration Date:

February 14, 2022. 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

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Inventors

Application

No. 10075551 filed on 02/14/2002

US Classes:

252/299.01, LIQUID CRYSTAL COMPOSITIONS514/937, DISPERSION OR EMULSION514/964, SUSTAINED OR DIFFERENTIAL RELEASE TYPE424/422, Implant or insert514/786, Glyceride424/407, Containing material to enhance the sticking of the active ingredients514/182, Oxygen single bonded to a ring carbon of the cyclopentanohydrophenanthrene ring system428/402.24, Microcapsule with solid core (includes liposome)424/401, Cosmetic, antiperspirant, dentifrice252/299.61Including heterocyclic ring

Examiners

Primary: Huff, Mark F.
Assistant: Sadula, Jennifer R.

Attorney, Agent or Firm

Frost Brown Todd LLC

Foreign Patent References

0 429 419 EP 05/01/1991
WO 98/47487 WO 10/01/1998
WO 99/12640 WO 03/01/1999
WO 01/68139 WO 09/01/2001

International Classes

C09K019/52
A61L027/00

Abstract

Functionalized cubic gel precursors, functionalized cubic liquid crystalline gels, dispersions of functionalized cubic gel particles and functionalized cubic gel particles are disclosed. Methods for preparing and using the precursors, gels, dispersions, and particles are also disclosed. The precursors, gels, dispersions, and particles are used to deliver active ingredients to substrates.

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