Granted Patent
Utility
US 5,615,064 · App. 08/317,979
Pulsed current velocity controlled head load method and apparatus which uses the back EMF to control the generation of head actuator driving pulses
Inventors:
Timothy J. Blank, Kevin J. Erickson, Richard Greenberg, John C. Purkett
Patented Case
View Patent ↗
Granted: Mar 25, 1997
Filed: Oct 3, 1994
Inventors
Timothy J. Blank
Kevin J. Erickson
Richard Greenberg
John C. Purkett
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.