Granted Patent
Utility
US 6,461,565 · App. 09/801,096
Method of pressing rare earth alloy magnetic powder
Inventors:
Koki Tokuhara, Shuhei Okumura, Akiyasu Oota
Patented Case
View Patent ↗
Granted: Oct 8, 2002
Filed: Mar 8, 2001
Inventors
Koki Tokuhara
Shuhei Okumura
Akiyasu Oota
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.