Giessen
Germany
3
2009-06-25
The entities that hold a legal rights for patent applications filed by inventor Friedrich Ralf:
Ralf Friedrich from Giessen, DE has applied for patents for these inventions. The list has both pending applications and granted patents:
Method for optical inspection, detection and visualization of defects on disk-shaped objects
#2 | 2008-08-28Method of determining geometric parameters of a wafer
#3 | 2006-11-02Method of learning a knowledge-based database used in automatic defect classification
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