Granted Patent
Utility
US 5,545,768 · App. 07/958,107
Process for the preparation of chlorofluronitrobenzenes and difluoronitrobenzenes
Inventors:
Theodor Papenfhus, Andreas Kanschik-Conradsen, Wilfried Pressler
Patented Case
View Patent ↗
Granted: Aug 13, 1996
Filed: Dec 22, 1992
Inventors
Theodor Papenfhus
Andreas Kanschik-Conradsen
Wilfried Pressler
Assignee (at issue)
Hoechet AG
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.