Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Reexamination Certificate
2006-06-06
2006-06-06
Kishore, Gollamudi S. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
C424S489000, C424S491000
Reexamination Certificate
active
07056535
ABSTRACT:
The invention provides proteinoid microsphere made up of a mixture of thermally condensed amino acids that are crosslinked with a bis dithiol crosslinker reagent. The proteinoid microspheres of the invention may be used to encapsulate a material or a compound and to provide slow, sustained or timed release of the material or compound. The proteinoid microspheres are stable in solution until exposed to a reducing agent. However, the in vivo environment provides a sufficient reduction potential to provide slow, sustained release of materials contained therein from the proteinoid microspheres of the present invention.
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Kimberly--Clark Worldwide, Inc.
Kishore Gollamudi S.
Schwegman Lundberg Woessner & Kluth P.A.
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