Granted Patent
Utility
US 4,385,994 · App. 06/315,055
Adsorptive use of crystalline metallophosphate compositions
Inventors:
Stephen T. Wilson, Brent M. T. Lok, Edith M. Flanigen
Patented Case
View Patent ↗
Granted: May 31, 1983
Filed: Oct 26, 1981
Inventors
Stephen T. Wilson
Brent M. T. Lok
Edith M. Flanigen
Assignee (at issue)
Union Carbide Corporation
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.