Granted Patent
Utility
US 6,008,640 · App. 08/940,929
Detection and measurement of head disc interference using read back signal (without acoustic emission sensor or laser doppler vibrometer)
Inventors:
Alan Choon Young Tan, Myint Ngwe, Joseph Cheng-Tsu Liu
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Sep 30, 1997
Inventors
Alan Choon Young Tan
Myint Ngwe
Joseph Cheng-Tsu Liu
Assignee (at issue)
Seagate Technology LLC
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.