Granted Patent
Utility
US 4,454,240 · App. 06/317,216
Catalyst regeneration process including metal contaminants removal
Inventor:
Partha S. Ganguli
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Nov 2, 1981
Inventor
Partha S. Ganguli
Assignee (at issue)
HRI
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.