Granted Patent
Utility
US 4,215,015 · App. 06/008,823
High octane FCC catalyst
Inventor:
Hosheng Tu
Patented Case
View Patent ↗
Granted: Jul 29, 1980
Filed: Feb 2, 1979
Inventor
Hosheng Tu
Assignee (at issue)
UOP LLC
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.