Granted Patent
Utility
US 5,635,140 · App. 08/557,780
Self-aerating spent catalyst distributor
Inventors:
Richard Miller, Paul Sestili
Patented Case
View Patent ↗
Granted: Jun 3, 1997
Filed: Nov 13, 1995
Inventors
Richard Miller
Paul Sestili
Assignee (at issue)
The M.W. Kellogg Company
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.