Granted Patent
Utility
US 5,523,486 · App. 08/326,100
Preparation of acetoacetarylamides
Inventors:
Karl E. Mack, Michael Bohusch
Patented Case
View Patent ↗
Granted: Jun 4, 1996
Filed: Oct 19, 1994
Inventors
Karl E. Mack
Michael Bohusch
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.