Granted Patent
Utility
US 4,211,760 · App. 06/018,074
Crystalline zeolite Upsilon and process for preparing same
Inventors:
Robert W. Grose, Edith M. Flanigen
Patented Case
View Patent ↗
Granted: Jul 8, 1980
Filed: Mar 6, 1979
Inventors
Robert W. Grose
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.