Granted Patent
Utility
US 6,816,972 · App. 09/550,848
Disk recording medium, reproduction device and method for performing reproduction on disk recording medium
Inventors:
Ken Kutaragi, Eiji Kawai, Kazuo Miura
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Apr 17, 2000
Inventors
Ken Kutaragi
Eiji Kawai
Kazuo Miura
Assignee (at issue)
SONY COMPUTER ENTERTAINMENT INC.
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.