Granted Patent
Utility
US 6,466,670 · App. 09/481,739
System for preventing playback of unauthorized digital video recordings
Inventors:
Yossef Tsuria, Yishai Sered
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: Jan 11, 2000
Inventors
Yossef Tsuria
Yishai Sered
Assignee (at issue)
NDS LIMITED
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.