Granted Patent
Utility
US 6,586,044 · App. 10/256,447
Method for manufacturing a magnetic hard disk having concentric magnetic tracks with flat surface
Inventors:
Hiroto Takeshita, Ryoichi Mukai, Wataru Yamagishi
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Sep 27, 2002
Inventors
Hiroto Takeshita
Ryoichi Mukai
Wataru Yamagishi
Assignee (at issue)
Fujitsu Limited
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.