Granted Patent
Utility
US 5,037,721 · App. 07/243,818
Positive radiation-sensitive mixture containing monomeric acid-cleavable compound and radiation-sensitive recording material produced therefrom
Inventor:
Karl-Friedrich Doessel
Patented Case
View Patent ↗
Granted: Aug 6, 1991
Filed: Sep 13, 1988
Inventor
Karl-Friedrich Doessel
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.