Granted Patent
Utility
US 5,194,098 · App. 07/876,902
Magnetic materials
Inventors:
Masato Sagawa, Setsuo Fujimura, Yutaka Matsuura
Patented Case
View Patent ↗
Granted: Mar 16, 1993
Filed: Apr 30, 1992
Inventors
Masato Sagawa
Setsuo Fujimura
Yutaka Matsuura
Assignee (at issue)
Sumitomo Special Metals 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.