Granted Patent
Utility
US 4,648,977 · App. 06/814,897
Process for removing toxic organic materials from weak aqueous solutions thereof
Inventors:
Desh R. Garg, James S. Ritscher
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Dec 30, 1985
Inventors
Desh R. Garg
James S. Ritscher
Assignee (at issue)
Union Carbide 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.