Granted Patent
Utility
US 5,837,389 · App. 08/847,467
Metal thin film magnetic recording medium having a Cr Ta Cu underlayer and a copt magnetic layer
Inventors:
Yoshinobu Okumura, Tadashi Akita
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Apr 25, 1997
Inventors
Yoshinobu Okumura
Tadashi Akita
Assignee (at issue)
Stormedia, 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.