Granted Patent
Utility
US 4,423,279 · App. 06/352,395
Separation of bi-alkyl substituted monocyclic aromatic isomers with pyrolyzed adsorbent
Inventor:
Santi Kulprathipanja
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Feb 25, 1982
Inventor
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.