Granted Patent
Utility
US 6,252,972 · App. 09/146,021
Method and arrangement for detecting a watermark using statistical characteristics of the information signal in which the watermark is embedded
Inventor:
Johan Paul Marie Gerard Linnartz
Patented Case
View Patent ↗
Granted: Jun 26, 2001
Filed: Sep 2, 1998
Inventor
Johan Paul Marie Gerard Linnartz
Assignee (at issue)
U.S. Philips 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.