Granted Patent
Utility
US 4,472,285 · App. 06/408,035
Solids removal from brine
Inventors:
David R. Carley, Warren B. Kirsch
Patented Case
View Patent ↗
Granted: Sep 18, 1984
Filed: Aug 13, 1982
Inventors
David R. Carley
Warren B. Kirsch
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.