Granted Patent
Utility
US 5,632,715 · App. 08/573,230
In situ immobilization of metals in waste stacks and waste stack affected zones
Inventors:
Joseph G. Harrington, Roger B. Humberger, Michael Orr, Charles H. Schwartz
Patented Case
View Patent ↗
Granted: May 27, 1997
Filed: Dec 15, 1995
Inventors
Joseph G. Harrington
Roger B. Humberger
Michael Orr
Charles H. Schwartz
Assignee (at issue)
J.R. Simplot 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.