Granted Patent
Utility
US 5,314,745 · App. 07/931,366
Magnetic recording medium having a glass substrate, heat retaining non magnetic metal layer formed over the substrate, amorphous nip layer, Cr layer and magnetic layer
Inventor:
Yoshinobu Okumura
Patented Case
View Patent ↗
Granted: May 24, 1994
Filed: Aug 18, 1992
Inventor
Yoshinobu Okumura
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.