Granted Patent
Utility
US 5,330,946 · App. 08/011,273
Process of acid binding fine smectite clay particles into granules
Inventors:
Russell E. Hynes, Robert S. Nebergall
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: Jan 29, 1993
Inventors
Russell E. Hynes
Robert S. Nebergall
Assignee (at issue)
American Colloid Company
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.