Granted Patent
Utility
US 6,602,352 · App. 09/891,497
Method for manufacturing rare earth magnet and powder compacting apparatus
Inventors:
Shuhei Okumura, Akira Nakamura
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: Jun 27, 2001
Inventors
Shuhei Okumura
Akira Nakamura
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.