IP Library › Granted Patent US 5,991,426
Granted Patent Utility
US 5,991,426 · App. 09/216,499

Field-based watermark insertion and detection

Inventors: Ingemar J. Cox, Matthew L. Miller
Patented Case View Patent ↗
Granted: Nov 23, 1999 Filed: Dec 18, 1998
Inventors
Ingemar J. Cox
Matthew L. Miller
Assignee (at issue)
Signafy, Inc.

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Quick Facts
Patent No.
US 5,991,426
App. No.
09/216,499
Filed
1998-12-18
Granted
1999-11-23
Kind
A