Granted Patent
Utility
US 6,584,200 · App. 09/286,071
Image scrambling method and apparatus therefor
Inventor:
Kazuyoshi Tanaka
Patented Case
View Patent ↗
Granted: Jun 24, 2003
Filed: Apr 5, 1999
Inventor
Kazuyoshi Tanaka
Assignee (at issue)
NEC 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.