Granted Patent
Utility
US 4,431,456 · App. 06/387,381
Technique to reduce the zeolite molecular sieve solubility in an aqueous system
Inventor:
Santi Kulprathipanja
Patented Case
View Patent ↗
Granted: Feb 14, 1984
Filed: Jun 11, 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.