Granted Patent
Utility
US 4,422,953 · App. 06/370,330
Corrosion inhibition of halocarbon systems
Inventors:
Mark T. Grace, Michael I. Naiman, Eddie C. French
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Apr 21, 1982
Inventors
Mark T. Grace
Michael I. Naiman
Eddie C. French
Assignee (at issue)
Petrolite Corporation
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.