Granted Patent
Utility
US 4,698,146 · App. 06/821,721
Hydrocracking and recovering polynuclear aromatic compounds in slop wax stream
Inventor:
Adrian J. Gruia
Patented Case
View Patent ↗
Granted: Oct 6, 1987
Filed: Jan 23, 1986
Inventor
Adrian J. Gruia
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.