Granted Patent
Utility
US 4,673,436 · App. 06/855,020
N, S containing corrosion inhibitors
Inventors:
John A. Haslegrave, Daniel S. Sullivan, III
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: Apr 22, 1986
Inventors
John A. Haslegrave
Daniel S. Sullivan, III
Assignee (at issue)
Exxon Chemical Patents, 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.