Granted Patent
Utility
US 6,664,976 · App. 10/100,233
Image management system and methods using digital watermarks
Inventors:
Neil E. Lofgren, Geoffrey B. Rhoads
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Mar 13, 2002
Inventors
Neil E. Lofgren
Geoffrey B. Rhoads
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.