Granted Patent
Utility
US 6,804,377 · App. 10/115,441
Detecting information hidden out-of-phase in color channels
Inventors:
Alastair M. Reed, Trent J. Brundage, Jeremy Leigh Cattone
Patented Case
View Patent ↗
Granted: Oct 12, 2004
Filed: Apr 2, 2002
Inventors
Alastair M. Reed
Trent J. Brundage
Jeremy Leigh Cattone
Assignee (at issue)
Digimarc Corporation
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.