Granted Patent
Utility
US 4,386,225 · App. 06/338,796
Process for the separation of cresol from xylenol
Inventor:
Richard W. Neuzil
Patented Case
View Patent ↗
Granted: May 31, 1983
Filed: Jan 11, 1982
Inventor
Richard W. Neuzil
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.