Granted Patent
Utility
US 4,500,464 · App. 06/466,447
Copper and manganese recovery from C.sub.5 -C.sub.9 saturated aliphatic _monocarboxylic acids _
Inventor:
Olan S. Fruchey
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Feb 15, 1983
Inventor
Olan S. Fruchey
Assignee (at issue)
Celanese GmbH
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.