Granted Patent
Utility
US 4,466,834 · App. 06/455,352
Corrosion inhibiting additive for cement compositions
Inventors:
Vance H. Dodson, Thomas HAYDEN
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: Jan 3, 1983
Inventors
Vance H. Dodson
Thomas HAYDEN
Assignee (at issue)
W. R. Grace & Co.
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.