Granted Patent
Utility
US 4,241,036 · App. 05/625,091
Synthetic crystalline zeolite and process for preparing same
Inventors:
Edith M. Flanigen, Elsa R. Kellberg
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Oct 23, 1975
Inventors
Edith M. Flanigen
Elsa R. Kellberg
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.