Granted Patent
Utility
US 4,696,763 · App. 06/730,028
Compositions containing heterocyclic corrosion inhibitors
Inventors:
Robert L. Bentley, William Hoyle, James Jack
Patented Case
View Patent ↗
Granted: Sep 29, 1987
Filed: May 3, 1985
Inventors
Robert L. Bentley
William Hoyle
James Jack
Assignee (at issue)
Ciba-Geigy
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.