Bipyridyls and their use as inks

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United States of America Patent

PATENT NO 5266700
SERIAL NO

07781261

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Abstract

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Process employing bipyridyls as inks, of the general formula ##STR1## in which R, R' are, for example, alkyl and R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 are, for example hydrogen or alkyl radicals, or R.sup.1 and R.sup.2 or R.sup.2 and R.sup.3, and/or R.sup.4 and R.sup.5 or R.sup.5 and R.sup.6 together with the pyridine ring form in isoquinoline or quinoline ring system.

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Patent Owner(s)

Patent OwnerAddress
RIEDEL-DE HAEN AKTIENGESELLSCHAFTSEELZE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Langhals, Heinz Ottobrunn, DE 24 182
Naumann, Christoph Kelkheim-Ruppertshain, DE 18 89

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