Granted Patent
Utility
US 6,449,367 · App. 09/790,566
Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels
Inventors:
David M. Van Wie, Robert P. Weber
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Feb 23, 2001
Inventors
David M. Van Wie
Robert P. Weber
Assignee (at issue)
Intertrust Technologies 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.