Granted Patent
Utility
US 6,723,259 · App. 09/496,491
Anticounterfeit, laser-markable label produced by diffraction gratings
Inventors:
Detlef Groth, Arne Koops, Axel Burmeister, Jochen Stähr
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Feb 2, 2000
Inventors
Detlef Groth
Arne Koops
Axel Burmeister
Jochen Stähr
Assignee (at issue)
tesa AG
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.