Granted Patent
Utility
US 6,275,130 · App. 09/445,810
Corrosion-resisting permanent magnet and method for producing the same
Inventors:
Kohshi Yoshimura, Takeshi Nishiuchi, Fumiaki Kikui
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: Mar 20, 2000
Inventors
Kohshi Yoshimura
Takeshi Nishiuchi
Fumiaki Kikui
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.