Granted Patent
Utility
US 4,541,923 · App. 06/672,637
Catalyst treatment and flow conditioning in an FCC reactor riser
Inventors:
David A. Lomas, Harold U. Hammershaimb
Patented Case
View Patent ↗
Granted: Sep 17, 1985
Filed: Nov 19, 1984
Inventors
David A. Lomas
Harold U. Hammershaimb
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.