Granted Patent
Utility
US 5,700,593 · App. 08/206,849
Metal thin film magnetic recording medium and manufacturing method thereof
Inventors:
Yoshinobu Okumura, Xingbo Yang
Patented Case
View Patent ↗
Granted: Dec 23, 1997
Filed: Mar 7, 1994
Inventors
Yoshinobu Okumura
Xingbo Yang
Assignee (at issue)
KUBOTA CORPORATION
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.