Granted Patent
Utility
US 6,374,036 · App. 09/164,859
Method and apparatus for copy-once watermark for video recording
Inventors:
John O. Ryan, Patrice Capitant, Clayton L. Davidson, James R. Holzgrafe, Kordian Kurowski, Andrew Mellows, Tony F. Rodriquez
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Oct 1, 1998
Inventors
John O. Ryan
Patrice Capitant
Clayton L. Davidson
James R. Holzgrafe
Kordian Kurowski
Andrew Mellows
Tony F. Rodriquez
Assignees (at issue)
Macrovision Corporation
Digimarc 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.