Granted Patent
Utility
US 4,996,301 · App. 07/464,003
Polyfunctional .alpha.-diazo-.beta.-keto esters and their use in light-sensitive compositions
Inventors:
Peter Wilharm, Hans-Joachim Merrem, Georg Pawlowski
Patented Case
View Patent ↗
Granted: Feb 26, 1991
Filed: Jan 12, 1990
Inventors
Peter Wilharm
Hans-Joachim Merrem
Georg Pawlowski
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.