Granted Patent
Utility
US 5,338,641 · App. 08/026,077
Positive-working radiation-sensitive mixture and copying material produced therefrom comprising an .alpha.,.alpha.-bis(sulfonyl) diazo methane as an acid forming compound
Inventors:
Georg Pawlowski, Hans-Joachim Merrem, Juergen Lingnau, Ralph R. Dammel, Horst Roeschert
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Mar 4, 1993
Inventors
Georg Pawlowski
Hans-Joachim Merrem
Juergen Lingnau
Ralph R. Dammel
Horst Roeschert
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.