Granted Patent
Utility
US 4,400,366 · App. 06/299,878
Method of making zeolites
Inventor:
Robert N. Sanders
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Sep 8, 1981
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.