Granted Patent
Utility
US 6,537,488 · App. 09/440,100
Process for handling powder green compacts and rare earth metal-based magnet
Inventors:
Shuhei Okumura, Hiroshi Hashikawa
Patented Case
View Patent ↗
Granted: Mar 25, 2003
Filed: Nov 15, 1999
Inventors
Shuhei Okumura
Hiroshi Hashikawa
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.