Granted Patent
Utility
US 5,153,303 · App. 07/467,710
Polyimides prepared from disubstituted aromatic tetracarboxylic acid dianhydrides
Inventors:
Stanley J. Jasne, Pasquale Alfred Falcigno
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Jan 19, 1990
Inventors
Stanley J. Jasne
Pasquale Alfred Falcigno
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.