Granted Patent
Utility
US 5,157,047 · App. 07/600,054
Bis- and tris(trifluoromethyl)arylpyrrole insecticidal and acaricidal agents
Inventors:
Venkataraman Kameswaran, Victor M. Kamhi
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: Oct 18, 1990
Inventors
Venkataraman Kameswaran
Victor M. Kamhi
Assignee (at issue)
American Cyanamid 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.