Granted Patent
Utility
US 5,162,162 · App. 07/684,078
Magnetic coating formulations and magnetic recording media
Inventors:
Masahiko Yasuda, Shigeo Hosokawa, Yorozu Yokomori, Shinichiro Jimbo
Patented Case
View Patent ↗
Granted: Nov 10, 1992
Filed: May 9, 1991
Inventors
Masahiko Yasuda
Shigeo Hosokawa
Yorozu Yokomori
Shinichiro Jimbo
Assignee (at issue)
B. F. Goodrich Company
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.