Granted Patent
Utility
US 4,948,909 · App. 07/394,039
Process for the preparation of iminodiacetonitrile and iminodiacetic acid
Inventors:
Karl E. Koenig, Gary A. Lanser, Paul A. Morrison, Robert B. Weisenfeld
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Aug 14, 1989
Inventors
Karl E. Koenig
Gary A. Lanser
Paul A. Morrison
Robert B. Weisenfeld
Assignee (at issue)
Monsanto 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.