74673570
May 15, 1995
Apr 16, 1996
conductors and conducting devices made of organic polymers and oligomers, semiconductors and semiconductor devices made of organic polymers and oligomers, light emitting diodes and displays, electro-luminescent displays, optical and infrared filters, optical elements made of organic polymers and oligomers; electro-chromic and photochromic apparatuses for use in electrical and incident light control applications
Electrical and Scientific Apparatus