Granted Patent
Utility
US 5,581,614 · App. 08/183,602
Method for encrypting and embedding information in a video program
Inventors:
Yee Kong Ng, Roy J. Mankovitz
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Jan 18, 1994
Inventors
Yee Kong Ng
Roy J. Mankovitz
Assignee (at issue)
INDEX SYSTEMS, LLC
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.