Granted Patent
Utility
US 5,124,233 · App. 07/202,765
Photoresist compositions
Inventors:
Kurt Meier, Ewald Losert
Patented Case
View Patent ↗
Granted: Jun 23, 1992
Filed: Jun 3, 1988
Inventors
Kurt Meier
Ewald Losert
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.