Granted Patent
Utility
US 6,200,628 · App. 09/166,145
Use of inorganic particles and method for making and identifying a substrate or an article
Inventors:
Olivier Rozumek, Edgar Müller
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: Oct 2, 1998
Inventors
Olivier Rozumek
Edgar Müller
Assignee (at issue)
SICPA HOLDING SA
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.