Granted Patent
Utility
US 5,403,496 · App. 08/221,644
Process for stabilizing metals in ash
Inventors:
Mark Gerard Kramer, Kathleen A. Fix
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: Mar 31, 1994
Inventors
Mark Gerard Kramer
Kathleen A. Fix
Assignee (at issue)
Drew Chemical Corporation
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.