Granted Patent
Utility
US 5,545,989 · App. 08/375,087
Non-destructive in-situ landing velocity determination of magnetic rigid disk drives using back EMF from the spindle motor during shutdown
Inventors:
Hong Tian, Christopher Briggs, Chisin Chiang, Jia Lee
Patented Case
View Patent ↗
Granted: Aug 13, 1996
Filed: Jan 19, 1995
Inventors
Hong Tian
Christopher Briggs
Chisin Chiang
Jia Lee
Assignee (at issue)
Conner Peripherals, Inc.
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.