Granted Patent
Utility
US 4,764,584 · App. 07/099,373
Radiation-sensitive polycondensates, their preparation, material coated therewith and the use thereof
Inventors:
Josef Pfeifer, Rudolf Duthaler
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Sep 11, 1987
Inventors
Josef Pfeifer
Rudolf Duthaler
Assignee (at issue)
Ciba-Geigy
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.