Granted Patent
Utility
US 4,187,248 · App. 05/854,109
Making a nitrodiarylamine by reacting an alkali metal salt of a formamide with a nitrohaloarene
Inventors:
Helmut L. Merten, Gene R. Wilder
Patented Case
View Patent ↗
Granted: Feb 5, 1980
Filed: Nov 23, 1977
Inventors
Helmut L. Merten
Gene R. Wilder
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.