Granted Patent
Utility
US 6,829,115 · App. 10/171,133
Method and apparatus for measuring half frequency whirl in a spindle motor
Inventors:
Xiong Liu, ChoonKiat Lim, YongJie Tang, Pow-Hing Yong
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Jun 13, 2002
Inventors
Xiong Liu
ChoonKiat Lim
YongJie Tang
Pow-Hing Yong
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.