Granted Patent
Utility
US 5,286,867 · App. 07/870,920
Substituted 1-sulfonyloxy-2-pyridones and process for preparing them
Inventors:
Gerhard Lohaus, Walter Spiess, Georg Pawlowski
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Apr 20, 1992
Inventors
Gerhard Lohaus
Walter Spiess
Georg Pawlowski
Assignee (at issue)
Hoechst GmbH
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.