Granted Patent
Utility
US 5,336,022 · App. 07/943,940
Method for producing enhanced soil stabilization reactions between lime and clay soils due to the effect of silica addition
Inventors:
J. T. McKennon, Norman L. Hains, David C. Hoffman
Patented Case
View Patent ↗
Granted: Aug 9, 1994
Filed: Sep 11, 1992
Inventors
J. T. McKennon
Norman L. Hains
David C. Hoffman
Assignee (at issue)
Chemical Lime 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.