Granted Patent
Utility
US 4,455,445 · App. 06/451,525
Separation of C.sub.4 olefins
Inventors:
Richard W. Neuzil, Santi Kulprathipanja
Patented Case
View Patent ↗
Granted: Jun 19, 1984
Filed: Dec 20, 1982
Inventors
Richard W. Neuzil
Santi Kulprathipanja
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.