Granted Patent
Utility
US 4,842,716 · App. 07/084,942
Ethylene furnace antifoulants
Inventors:
Morris Kaplan, John C. Kisalus
Patented Case
View Patent ↗
Granted: Jun 27, 1989
Filed: Aug 13, 1987
Inventors
Morris Kaplan
John C. Kisalus
Assignee (at issue)
Nalco Chemical Company
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.