Granted Patent
Utility
US 6,432,354 · App. 09/731,913
Method and apparatus for feeding magnetic powder and method for manufacturing magnet
Inventors:
Atsushi Ogawa, Toshiaki Tamura
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Dec 8, 2000
Inventors
Atsushi Ogawa
Toshiaki Tamura
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.