Granted Patent
Utility
US 5,925,788 · App. 09/068,778
Method of preparing 2-trifluoromethoxy-benzenesulphonamide
Inventors:
Reinhard Lantzsch, Albrecht Marhold, Ernst Kysela
Patented Case
View Patent ↗
Granted: Jul 20, 1999
Filed: May 14, 1998
Inventors
Reinhard Lantzsch
Albrecht Marhold
Ernst Kysela
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.