Granted Patent
Utility
US 4,149,964 · App. 05/857,551
Method of injecting hydrocarbon feed
Inventor:
David B. Bartholic
Patented Case
View Patent ↗
Granted: Apr 17, 1979
Filed: Dec 5, 1977
Inventor
David B. Bartholic
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.