Granted Patent
Utility
US 5,609,970 · App. 08/371,848
Electroluminescent device with polymeric charge injection layer
Inventors:
Eric S. Kolb, Parag G. Mehta
Patented Case
View Patent ↗
Granted: Mar 11, 1997
Filed: Jan 12, 1995
Inventors
Eric S. Kolb
Parag G. Mehta
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.