Granted Patent
Utility
US 5,648,155 · App. 08/389,318
Magnetic recording medium
Inventors:
Kenji Tokui, Yoshiteru Matsubayashi, Masashi Yoshikawa, Jyunji Oshita, Yuji Ohata
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Feb 16, 1995
Inventors
Kenji Tokui
Yoshiteru Matsubayashi
Masashi Yoshikawa
Jyunji Oshita
Yuji Ohata
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.