Granted Patent
Utility
US 4,935,320 · App. 07/231,323
Adhesively bonded photostructurable polyimide film
Inventors:
Ottmar Rohde, Armin Schaffner
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Aug 12, 1988
Inventors
Ottmar Rohde
Armin Schaffner
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.