Granted Patent
Utility
US 5,314,643 · App. 08/038,431
High temperature corrosion inhibitor
Inventors:
James G. Edmondson, S. Pruett
Patented Case
View Patent ↗
Granted: May 24, 1994
Filed: Mar 29, 1993
Inventors
James G. Edmondson
S. Pruett
Assignee (at issue)
Betz Laboratories, 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.