Granted Patent
Utility
US 6,438,172 · App. 08/463,827
Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording medium
Inventors:
Masafumi Nakamura, Toshifumi Takeuchi
Patented Case
View Patent ↗
Granted: Aug 20, 2002
Filed: Jun 5, 1995
Inventors
Masafumi Nakamura
Toshifumi Takeuchi
Assignee (at issue)
HITACHI, 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.