Granted Patent
Utility
US 4,398,048 · App. 06/313,899
Preparation of 2,4,6-trialkylphenols
Inventor:
Bruce E. Firth
Patented Case
View Patent ↗
Granted: Aug 9, 1983
Filed: Oct 21, 1981
Inventor
Bruce E. Firth
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.