Granted Patent
Utility
US 4,812,464 · App. 07/129,199
Pesticidal 2-pyridyl-4,5-dihydro-1,3,4-thiadiazoles
Inventors:
Saleem Farooq, Josef Ehrenfreund, Hans-Rudolf Waespe
Patented Case
View Patent ↗
Granted: Mar 14, 1989
Filed: Dec 7, 1987
Inventors
Saleem Farooq
Josef Ehrenfreund
Hans-Rudolf Waespe
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.