Granted Patent
Utility
US 6,552,230 · App. 09/720,011
Method for preparing 2-nitro-5-(phenylthio)-anilines
Inventors:
Volker Glock, Willi Streicher, Friedrich-Wilhelm Ullrich
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Dec 19, 2000
Inventors
Volker Glock
Willi Streicher
Friedrich-Wilhelm Ullrich
Assignee (at issue)
Bayer Aktiengesellschaft
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.