Granted Patent
Utility
US 4,738,837 · App. 06/852,174
Chromium-aluminum-phosphorus-silicon-oxide molecular sieve compositions
Inventors:
Edith M. Flanigen, Brent M. T. Lok, Robert L. Patton, Stephen T. Wilson
Patented Case
View Patent ↗
Granted: Apr 19, 1988
Filed: Apr 15, 1986
Inventors
Edith M. Flanigen
Brent M. T. Lok
Robert L. Patton
Stephen T. Wilson
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.