Granted Patent
Utility
US 4,545,816 · App. 06/616,841
Processes relating to the extraction of metals from laterites and ocean manganese nodules
Inventor:
Alkis S. Rappas
Patented Case
View Patent ↗
Granted: Oct 8, 1985
Filed: Jun 4, 1984
Inventor
Alkis S. Rappas
Assignee (at issue)
The Standard Oil Company
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.