Alexander Stuck,Harald Walter,Marc Schnieper,Jürgen Söchtig,Christian Zschokke
申请号：
US12308484
公开号：
US09592646B2
申请日:
2007.06.12
申请国别(地区):
US
年份:
2017
代理人:
摘要：
A tablet for pharmaceutical use has on at least one part of its surface a diffractive microstructure which generates diffraction effects which can be perceived in the visible spectral range and which serve as visual safety feature. The tablet includes a plurality of individual powder particles, where the diffractive microstructures are impressed into the surface of the individual powder particles. A compression tool to produce such tablets has on one pressing surface of the compression tool micro-structures, where the microstructures have dimensions which are smaller than the dimensions of the individual crystallites of the material of the pressing surface of the compression tool. The micro-structures of the compression tool can be produced for example by ion etching or by imprinting.
