Granted Patent
Utility
US 5,563,018 · App. 08/032,276
(1,2-naphthoquinone 2-diazide) sulfonic acid esters, radiation-sensitive mixture prepared therewith and radiation-sensitive recording material
Inventors:
Gerhard Buhr, Wolfgang Zahn, Fritz Erdmann, Siegfried Scheler
Patented Case
View Patent ↗
Granted: Oct 8, 1996
Filed: Mar 17, 1993
Inventors
Gerhard Buhr
Wolfgang Zahn
Fritz Erdmann
Siegfried Scheler
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.