Granted Patent
Utility
US 4,388,224 · App. 06/286,359
Molybdenum-exchanged crystalline aluminosilicate zeolite
Inventor:
Eric L. Moorehead
Patented Case
View Patent ↗
Granted: Jun 14, 1983
Filed: Jul 23, 1981
Inventor
Eric L. Moorehead
Assignee (at issue)
Union Oil Company of California
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.