Granted Patent
Utility
US 4,436,708 · App. 06/415,428
Production of synthetic zeolites
Inventor:
Robert N. Sanders
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Sep 7, 1982
Inventor
Robert N. Sanders
Assignee (at issue)
Ethyl 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.