Granted Patent
Utility
US 4,478,635 · App. 06/455,175
N-Arylsulfonyl-N'-pyrimidinylureas
Inventors:
Willy Meyer, Karl Gass, Werner Topfl, Rolf Schurter, Georg Pissiotas
Patented Case
View Patent ↗
Granted: Oct 23, 1984
Filed: Jan 3, 1983
Inventors
Willy Meyer
Karl Gass
Werner Topfl
Rolf Schurter
Georg Pissiotas
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.