Granted Patent
Utility
US 4,724,064 · App. 06/553,008
Composition and method for coke retardant during hydrocarbon processing
Inventor:
Dwight K. Reid
Patented Case
View Patent ↗
Granted: Feb 9, 1988
Filed: Nov 17, 1983
Inventor
Dwight K. Reid
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.