Granted Patent
Utility
US 4,925,912 · App. 07/281,429
Auto-photocrosslinkable copolyimides and polyimide compositions
Inventors:
Ottmar Rohde, Stanley J. Jasne, Josef Pfeifer
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Dec 8, 1988
Inventors
Ottmar Rohde
Stanley J. Jasne
Josef Pfeifer
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.