Granted Patent
Utility
US 6,781,949 · App. 09/788,744
Optical information storage medium having lands and grooves both serving as recording tracks
Inventor:
Yasuaki Morimoto
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Feb 20, 2001
Inventor
Yasuaki Morimoto
Assignee (at issue)
Fujitsu Limited
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.