Granted Patent
Utility
US 4,262,012 · App. 05/751,918
O-Methyl/ethyl-s-propyl/butyl-o-phenyl thiophosphates and dithiophosphates having an s-heterocyclic group on the phenyl ring
Inventors:
Ernst Beriger, Manfred Boger, Jozef Drabek, Odd Kristiansen
Patented Case
View Patent ↗
Granted: Apr 14, 1981
Filed: Dec 17, 1976
Inventors
Ernst Beriger
Manfred Boger
Jozef Drabek
Odd Kristiansen
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.