Granted Patent
Utility
US 5,837,129 · App. 08/237,224
Process and apparatus for separating fluidized cracking catalysts from hydrocarbon vapor
Inventors:
Joseph L. Ross, Charles Schaub
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: May 2, 1994
Inventors
Joseph L. Ross
Charles Schaub
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.