Granted Patent
Utility
US 4,401,561 · App. 06/333,085
Hydrotreating process with ammonia injection to reaction zone effluent
Inventors:
H. Lytle Thompson, Milton L. Kaplan
Patented Case
View Patent ↗
Granted: Aug 30, 1983
Filed: Dec 21, 1981
Inventors
H. Lytle Thompson
Milton L. Kaplan
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.