Granted Patent
Utility
US 5,840,975 · App. 08/875,363
Process for preparing nucleus-halogenated benzoyl chlorides
Inventors:
Reinhold Gehring, Herbert Muller, Georg Hardenbicker, Werner Bussmann
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Jul 24, 1997
Inventors
Reinhold Gehring
Herbert Muller
Georg Hardenbicker
Werner Bussmann
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.