Granted Patent
Utility
US 5,036,074 · App. 07/481,264
Certain 2,4-dichloro-phenyl(loweralkylidene) pyridines having fungicidal activity
Inventors:
Hans P. Isenring, Beat Zehnder, Hugo Ziegler
Patented Case
View Patent ↗
Granted: Jul 30, 1991
Filed: Feb 20, 1990
Inventors
Hans P. Isenring
Beat Zehnder
Hugo Ziegler
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.