Method of microencapsulation

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form

Reexamination Certificate

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Details

C424S489000, C424S493000, C424S494000, C424S495000, C424S496000, C424S497000, C424S501000, C264S004330, C264S004600, C264S004100, C264S004320, C264S004000, C427S212000, C427S213300, C427S213360, C427S213310, C428S402200, C428S402210, C428S402220, C428S402240, C428S404000, C428S407000, C523S105000

Reexamination Certificate

active

07838037

ABSTRACT:
The present invention provides methods for microencapsulation of active ingredients for topical application, whereby double-layer and triple-layer microcapsules are obtained. The microcapsules protect the active ingredients, maintain their original activity throughout processing, formulation and storage, and enable controlled release of the active ingredient only upon application onto the skin.

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