Granted Patent
Utility
US 4,363,672 · App. 06/252,663
Separation process using cellulose acetate butyrate bound zeolite adsorbents
Inventor:
Santi Kulprathipanja
Patented Case
View Patent ↗
Granted: Dec 14, 1982
Filed: Apr 9, 1981
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.