Granted Patent
Utility
US 6,816,549 · App. 09/992,021
METHOD FOR PROTECTION OF DATA REPRODUCTION ACCORDING TO MEDIUM PROTECTION DATA AND FIRST AND SECOND APPARATUS PROTECTION DATA TO DETERMINE WHETHER MAIN DATA ARE REPRODUCED IN THEIR ENTIRETY, PARTIALLY, OR NOT AT ALL AND A RANGE OF PROTECTION LEVEL THEREFOR
Inventor:
Takayuki Sugahara
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Nov 26, 2001
Inventor
Takayuki Sugahara
Assignee (at issue)
Victor Company of Japan, Ltd.
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.