Granted Patent
Utility
US 6,203,934 · App. 09/169,189
Magnetic recording medium
Inventors:
Koji Naoe, Kiyomi Ejiri, Naoto Abe
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Oct 8, 1998
Inventors
Koji Naoe
Kiyomi Ejiri
Naoto Abe
Assignee (at issue)
Fui Photo Film Co., Ltd.
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.