Granted Patent
Utility
US 4,673,552 · App. 06/730,255
Downwardly directed fluid flow distribution system for ebullated bed reactor
Inventors:
Allen Li, Richard M. Eccles, Lloyd M. Ruef
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: May 3, 1985
Inventors
Allen Li
Richard M. Eccles
Lloyd M. Ruef
Assignee (at issue)
Hydrocarbon Research, 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.