Granted Patent
Utility
US 6,153,997 · App. 09/229,833
Disk apparatus and method of controlling disk apparatus
Inventors:
Masahito Kobayashi, Iwao Oshimi, Yoshio Soyama, Akio Shioya, Yuji Hata
Patented Case
View Patent ↗
Granted: Nov 28, 2000
Filed: Jan 13, 1999
Inventors
Masahito Kobayashi
Iwao Oshimi
Yoshio Soyama
Akio Shioya
Yuji Hata
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.