Granted Patent
Utility
US 4,757,039 · App. 07/018,265
Dual function heat withdrawal in a fluidized catalytic cracking-regeneration process
Inventor:
David A. Lomas
Patented Case
View Patent ↗
Granted: Jul 12, 1988
Filed: Feb 24, 1987
Inventor
David A. Lomas
Assignee (at issue)
UOP LLC
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.