Granted Patent
Utility
US 5,158,667 · App. 07/749,034
Methods for inhibiting fouling in fluid catalytic cracking units
Inventors:
Raymon Barlow, Dwight K. Reid
Patented Case
View Patent ↗
Granted: Oct 27, 1992
Filed: Aug 23, 1991
Inventors
Raymon Barlow
Dwight K. Reid
Assignee (at issue)
Betz Laboratories, Inc.
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.