Granted Patent
Utility
US 5,696,643 · App. 08/632,787
Disk drive apparatus and read error recovery method in a disk drive apparatus
Inventors:
Kazushi Tsuwako, Fujio Harako, Katsumi Suda, Michio Nakajima, Isao Yoneda, Kenji Ogasawara
Patented Case
View Patent ↗
Granted: Dec 9, 1997
Filed: Apr 17, 1996
Inventors
Kazushi Tsuwako
Fujio Harako
Katsumi Suda
Michio Nakajima
Isao Yoneda
Kenji Ogasawara
Assignee (at issue)
International Business Machines Corporation
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.