Granted Patent
Utility
US 5,424,166 · App. 08/194,307
Negative-working radiation-sensitive mixture containing diazomethane acid generator and a radiation-sensitive recording material produced therfrom
Inventors:
Georg Pawlowski, Ralph R. Dammel, Horst Roeschert, Walter Spiess, Winfried Meier
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Feb 4, 1994
Inventors
Georg Pawlowski
Ralph R. Dammel
Horst Roeschert
Walter Spiess
Winfried Meier
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.