Granted Patent
Utility
US 6,724,911 · App. 09/558,727
Robust digital watermarking
Inventors:
Ingemar J. Cox, Matthew L. Miller
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Apr 26, 2000
Inventors
Ingemar J. Cox
Matthew L. Miller
Assignee (at issue)
NEC Laboratories America, Inc.
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.