Granted Patent
Utility
US 4,326,092 · App. 06/169,552
Process for the separation of meta-xylene
Inventor:
Richard W. Neuzil
Patented Case
View Patent ↗
Granted: Apr 20, 1982
Filed: Jul 17, 1980
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.