Granted Patent
Utility
US 5,607,624 · App. 08/304,455
Process for the preparation of 3-arylbenzofuranones
Inventors:
Peter Nesvadba, Samuel Evans, Ralf Lorenz Schmitt
Patented Case
View Patent ↗
Granted: Mar 4, 1997
Filed: Sep 12, 1994
Inventors
Peter Nesvadba
Samuel Evans
Ralf Lorenz Schmitt
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.