Granted Patent
Utility
US 6,790,955 · App. 10/288,052
Processes for the preparation of aminophenylsulfonyl-ureas and intermediate products for the processes
Inventors:
Gerhard Schnabel, Jan Vermehren, Lothar Willms
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Nov 5, 2002
Inventors
Gerhard Schnabel
Jan Vermehren
Lothar Willms
Assignee (at issue)
Hoechst Schering Agrevo GmbH
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.