Granted Patent
Utility
US 6,458,182 · App. 09/742,500
Process for producing high-purity Mn materials
Inventors:
Yuichiro Shindo, Tsuneo Suzuki
Patented Case
View Patent ↗
Granted: Oct 1, 2002
Filed: Dec 21, 2000
Inventors
Yuichiro Shindo
Tsuneo Suzuki
Assignee (at issue)
Japan Energy Corporation
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.