Granted Patent
Utility
US 5,135,674 · App. 07/657,624
Sodium chloride deicer composition having gelling agent additive to minimize spalling of concrete
Inventors:
Eugene J. Kuhajek, Kurt John Waatti
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Feb 20, 1991
Inventors
Eugene J. Kuhajek
Kurt John Waatti
Assignee (at issue)
Morton International, Inc.
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.