Granted Patent
Utility
US 6,503,473 · App. 09/514,281
Process for separating solid compound other than lithium hydroxide
Inventor:
Iwao Akiba
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Feb 28, 2000
Inventor
Iwao Akiba
Assignees (at issue)
Idemitsu Petrochemical Co., Ltd.
PETROLEUM ENERGY CENTER
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.