Granted Patent
Utility
US 6,414,809 · App. 09/412,890
Data storage device servo control apparatus and method
Inventors:
Tatsuya Sakai, Akira Tokizono, Naoyuki Kagami, Takashi Kuroda
Patented Case
View Patent ↗
Granted: Jul 2, 2002
Filed: Jan 5, 1999
Inventors
Tatsuya Sakai
Akira Tokizono
Naoyuki Kagami
Takashi Kuroda
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.