Granted Patent
Utility
US 5,898,542 · App. 09/152,030
Magneto-resistive effect type head with step or protrusion for reducing thermal asperity
Inventors:
Takao Koshikawa, Yoshifumi Mizoshita
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Sep 11, 1998
Inventors
Takao Koshikawa
Yoshifumi Mizoshita
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.