Granted Patent
Utility
US 4,655,935 · App. 06/789,584
Detoxification of waste water from dithiocarbamate manufacture
Inventors:
Jan A. Wijn, Peter Kool
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Oct 21, 1985
Inventors
Jan A. Wijn
Peter Kool
Assignee (at issue)
Pennwalt 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.