Granted Patent
Utility
US 5,229,485 · App. 07/766,467
Soluable polyimides
Inventors:
Andreas Kramer, Jean-Pierre Wolf, Rudolf Brunner
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Sep 26, 1991
Inventors
Andreas Kramer
Jean-Pierre Wolf
Rudolf Brunner
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.