Granted Patent
Utility
US 4,952,599 · App. 07/221,849
Phenylthioureas, phenylisothioureas, phenylcarbodiimides, pesticidal compositions containing them and their use in pest control
Inventors:
Josef Ehrenfreund, Manfred Boger, Jozef Drabek
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Jul 20, 1988
Inventors
Josef Ehrenfreund
Manfred Boger
Jozef Drabek
Assignee (at issue)
Ciba-Geigy
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.