Granted Patent
Utility
US 5,414,069 · App. 08/012,038
Electroluminescent polymers, processes for their use, and electroluminescent devices containing these polymers
Inventors:
William J. Cumming, Russell Gaudiana, Richard T. Ingwall, Eric S. Kolb, Parag G. Mehta, Richard A. Minns
Patented Case
View Patent ↗
Granted: May 9, 1995
Filed: Feb 1, 1993
Inventors
William J. Cumming
Russell Gaudiana
Richard T. Ingwall
Eric S. Kolb
Parag G. Mehta
Richard A. Minns
Assignee (at issue)
Polaroid Corporation
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.