Granted Patent
Utility
US 4,519,953 · App. 06/594,547
Process for preparing stilbenedicarbonitriles
Inventor:
Lorenz Heiss
Patented Case
View Patent ↗
Granted: May 28, 1985
Filed: Mar 29, 1984
Inventor
Lorenz Heiss
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.