Granted Patent
Utility
US 5,656,100 · App. 08/636,905
Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magnet
Inventors:
Kazuhiko Yamamoto, Yuichi Miyake, Chikara Okada
Patented Case
View Patent ↗
Granted: Aug 12, 1997
Filed: Apr 18, 1996
Inventors
Kazuhiko Yamamoto
Yuichi Miyake
Chikara Okada
Assignee (at issue)
Santoku Metal Industry 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.