Granted Patent
Utility
US 4,800,253 · App. 07/089,093
Electrical devices containing conductive polymers
Inventors:
Lothar W. Kleiner, Martin Matthiesen
Patented Case
View Patent ↗
Granted: Jan 24, 1989
Filed: Aug 25, 1987
Inventors
Lothar W. Kleiner
Martin Matthiesen
Assignee (at issue)
Raychem Limited
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.