Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form
Reexamination Certificate
2005-11-15
2005-11-15
Webman, Edward J. (Department: 1616)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
C514S938000, C514S777000, C514S782000
Reexamination Certificate
active
06964772
ABSTRACT:
A thermo- and photo stable composition comprising a chitosan/xanthan hydrogel including at least one thermo- or photo-sensitive substance chosen among the following: vitamins, amino-acids, nucleic acids, and polypeptides. The hydrogel can be adapted to release the thermo- or photo-sensible substances in either a human or an animal. The present invention also discloses a method of making these hydrogel composition. Additionally, the present invention presents a method of using these hydrogel composition in dermatology or as a food supplement.
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Chornet Esteban
Dumitriu Severian
Dubuc Goudreau Gage
Kemestrie Inc.
Webman Edward J.
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