Granted Patent
Utility
US 4,964,468 · App. 07/390,755
Method of inhibiting corrosion
Inventors:
William Adams, Gary Russell Chesnut
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Aug 8, 1989
Inventors
William Adams
Gary Russell Chesnut
Assignee (at issue)
Nalco Chemical 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.