Granted Patent
Utility
US 6,711,261 · App. 09/356,798
Enhancing concealment in the presence of fine mistuning for various TV scrambling techniques
Inventor:
Ronald Quan
Patented Case
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Granted: Mar 23, 2004
Filed: Jul 20, 1999
Inventor
Ronald Quan
Assignee (at issue)
Macrovision 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.