Granted Patent
Utility
US 3,944,482 · App. 05/459,534
Process for the cracking of high metals content feedstocks
Inventors:
Bruce R. Mitchell, Harold E. Swift
Patented Case
View Patent ↗
Granted: Mar 16, 1976
Filed: Apr 10, 1974
Inventors
Bruce R. Mitchell
Harold E. Swift
Assignee (at issue)
Gulf Research & Development 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.