Granted Patent
Utility
US 6,482,349 · App. 09/421,237
Powder pressing apparatus and powder pressing method
Inventors:
Seiichi Kohara, Tsutomu Harada
Patented Case
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Granted: Nov 19, 2002
Filed: Oct 20, 1999
Inventors
Seiichi Kohara
Tsutomu Harada
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.