Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Reexamination Certificate
2011-05-10
2011-05-10
Eyler, Yvonne L (Department: 1619)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
C424S490000, C427S212000, C428S403000
Reexamination Certificate
active
07939103
ABSTRACT:
A process for the production of CS particles (10) and microcapsules (12) is described, in which at least one active compound (4) is adsorbed in porous templates (2) (A), as a result of which templates (5) filled with active compounds are present. Subsequently, the templates (2) are provided (B) with a primer layer (6) which is intended to facilitate the subsequent construction of the capsule shell (9). The capsule shell is formed (C) by applying alternately charged polyelectrolyte layers (8). Filled CS particles (10) are obtained. By subsequent dissolution of the templates (2) the active compounds (4) are released (D) from the template into the interior of the microcapsules. The active compounds (4) remain enclosed there or are slowly released (E) from the capsule.
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Written Opinion of the International S
Baude Barbara
Dahne Lars
Capsulution Pharma AG
Eyler Yvonne L
Fanelli Haag PLLC
Ziska Suzanne
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