Granted Patent
Utility
US 6,632,773 · App. 09/554,788
Heat-sensitive recording materials and method for authenticity checking
Inventors:
Erich Kranz, Karsten Süssenbach, Gerhard Stork, Michael Reimann, Wolfgang Wagner
Patented Case
View Patent ↗
Granted: Oct 14, 2003
Filed: May 19, 2000
Inventors
Erich Kranz
Karsten Süssenbach
Gerhard Stork
Michael Reimann
Wolfgang Wagner
Assignee (at issue)
Mitsubishi HiTec Paper Flensburgh 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.