Granted Patent
Utility
US 5,596,447 · App. 08/307,658
Magnetooptical element
Inventor:
Koichi Onodera
Patented Case
View Patent ↗
Granted: Jan 21, 1997
Filed: Sep 15, 1994
Inventor
Koichi Onodera
Assignee (at issue)
TOKIN 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.