Granted Patent
Utility
US 4,552,645 · App. 06/587,952
Process for cracking heavy hydrocarbon to produce olefins and liquid hydrocarbon fuels
Inventors:
Robert J. Gartside, Axel Johnson, Joseph L. Ross
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: Mar 9, 1984
Inventors
Robert J. Gartside
Axel Johnson
Joseph L. Ross
Assignee (at issue)
Stone & Webster Engineering Corp.
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.