Granted Patent
Utility
US 5,194,243 · App. 06/781,208
Production of aluminum compound
Inventors:
Alan Pearson, James R. Wall, deceased
Patented Case
View Patent ↗
Granted: Mar 16, 1993
Filed: Sep 30, 1985
Inventors
Alan Pearson
James R. Wall, deceased
Assignee (at issue)
Aluminum Company of America
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.