Granted Patent
Utility
US 4,238,243 · App. 06/043,526
Technique to reduce the zeolite molecular sieve solubility in an aqueous system
Inventors:
Hosheng Tu, Juana E. Rojo
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: May 29, 1979
Inventors
Hosheng Tu
Juana E. Rojo
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.