Granted Patent
Utility
US 5,459,624 · App. 08/143,561
Activator control method and apparatus for positioning a transducer using a phase plane trajectory trough function for a direct access storage device with estimated velocity and position states
Inventors:
Kevin J. Erickson, Alexei H. Sacks
Patented Case
View Patent ↗
Granted: Oct 17, 1995
Filed: Oct 26, 1993
Inventors
Kevin J. Erickson
Alexei H. Sacks
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.