Granted Patent
Utility
US 5,011,933 · App. 07/485,106
Nitration of phenyl triazolinones
Inventors:
John H. Hoare, Marc Halfon
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: Feb 26, 1990
Inventors
John H. Hoare
Marc Halfon
Assignee (at issue)
FMC 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.