Granted Patent
Utility
US 5,330,943 · App. 07/904,336
Process for improving the physical and catalytic properties of a fluid cracking catalyst
Inventors:
Joseph C. S. Shi, Edwin W. Alberg, Geoffrey R. Wilson
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: Jun 25, 1992
Inventors
Joseph C. S. Shi
Edwin W. Alberg
Geoffrey R. Wilson
Assignee (at issue)
Thiele Kaolin 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.