Granted Patent
Utility
US 6,344,261 · App. 09/381,641
Printed document having a value and comprising a luminescent authenticity feature based on a host lattice
Inventors:
Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
Patented Case
View Patent ↗
Granted: Feb 5, 2002
Filed: Dec 6, 1999
Inventors
Wittich Kaule
Gerhard Schwenk
Gerhard Stenzel
Assignee (at issue)
GIESECKE & DEVRIENT GMBH
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.