Granted Patent
Utility
US 5,114,816 · App. 07/431,221
Radiation-sensitive compounds, radiation-sensitive mixture prepared therewith and copying material
Inventors:
Siegfried Scheler, Gerhard Buhr, Helmut Lenz, Klaus Bergmann, Herbert Siegel
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Nov 3, 1989
Inventors
Siegfried Scheler
Gerhard Buhr
Helmut Lenz
Klaus Bergmann
Herbert Siegel
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.