Granted Patent
Utility
US 4,962,264 · App. 07/425,622
Methods for retarding coke formation during pyrolytic hydrocarbon processing
Inventor:
David R. Forester
Patented Case
View Patent ↗
Granted: Oct 9, 1990
Filed: Oct 23, 1989
Inventor
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.