Granted Patent
Utility
US 4,623,529 · App. 06/776,752
Method of making a zeolite of the clinoptilolite type by seeding
Inventors:
Robert N. Sanders, Sebastian M. Laurent
Patented Case
View Patent ↗
Granted: Nov 18, 1986
Filed: Sep 16, 1985
Inventors
Robert N. Sanders
Sebastian M. Laurent
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.