Granted Patent
Utility
US 5,492,745 · App. 08/194,636
Magnetic recording medium and method for its production
Inventor:
Fumiaki Yokoyama
Patented Case
View Patent ↗
Granted: Feb 20, 1996
Filed: Feb 10, 1994
Inventor
Fumiaki Yokoyama
Assignee (at issue)
MITSUBISHI CHEMICAL 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.