Granted Patent
Utility
US 4,756,820 · App. 06/883,254
Method for retarding corrosion and coke formation and deposition during pyrolytic hydrocarbon processing
Inventors:
Dwight K. Reid, David R. Forester
Patented Case
View Patent ↗
Granted: Jul 12, 1988
Filed: Jul 8, 1986
Inventors
Dwight K. Reid
David R. Forester
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.