Granted Patent
Utility
US 5,809,139 · App. 08/710,246
Watermarking method and apparatus for compressed digital video
Inventors:
Bernd Girod, Frank Hartung
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Sep 13, 1996
Inventors
Bernd Girod
Frank Hartung
Assignee (at issue)
Vivo Software, Inc.
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.