Granted Patent
Utility
US 4,946,579 · App. 07/345,689
Chemical conversion processes utilizing catalyst containing crystalline galliosilicate molecular sieves having the erionite-type structure
Inventor:
Mario L. Occelli
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: May 1, 1989
Inventor
Mario L. Occelli
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.