Granted Patent
Utility
US 5,672,791 · App. 08/590,860
Process for the preparation of nuclear-halogenated benzotrichlorides from the corresponding benzotrifluorides
Inventors:
Fritz Doring, Reinhold Gehring, Josef Heinrich
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: Jan 24, 1996
Inventors
Fritz Doring
Reinhold Gehring
Josef Heinrich
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.