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Nusrallah Jubran, Zbigniew Tokarski, Kam Law, Vytautas Getautis, Jonas Sidaravicius, Osvaldas Paliulis, Valentas Gaidelis, Vygintas Jankauskas: Electrophotographic organophotoreceptors with novel charge transport compounds. Samsung Electronics, Patterson Thuente Skaar & Christensen P A, June 15, 2004: US06749978 (14 worldwide citation)

Charge transport compounds are described that have a multiple number of hydrazone-bridged heterocyclic groups (especially julolidine groups, carbazole groups, triarylamine groups and (N,N-disubstituted)arylamine groups such as dialkarylamine groups (e.g. dimethylphenylamine; methylethylphenylamine, ...


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Vytautas Getautis, Maryte Daskeviciene, Tadas Malinauskas, Edmundas Montrimas, Jonas Sidaravicius, Zbigniew Tokarski, Nusrallah Jubran, Kam W Law: Organophotoreceptor with a charge transport compound having an epoxy group. Samsung Electronics, Patterson Thuente Skaar & Christensen P A, August 15, 2006: US07090953 (6 worldwide citation)

This invention relates to a novel organophotoreceptor that comprises an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having a) a charge transport compound having the formula R1 is an aromatic group, an alkyl group ...


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Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Jonas Sidaravicius, Edmundas Montrimas, Maryte Daskeviciene, Valentas Gaidelis, Vygintas Jankauskas, Albina Stanisauskaite: Hydrazone-based charge transport materials. Samsung Electronics, Patterson Thuente Skaar & Christensen P A, January 30, 2007: US07169521 (4 worldwide citation)

Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula  where R1 and R2 are, each independently, an alkyl group, an ...


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Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Valentas Gaidelis, Maryte Daskeviciene, Edmundas Montrimas, Ingrida Paulauskaite, Jonas Sidaravicius: Azine-based dimeric charge transport materials. Samsung Electronics, Patterson Thuente Skaar &Christensen P A, October 3, 2006: US07115347 (2 worldwide citation)

Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, and R4 comprise, each independently, an alk ...


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Nusrallah Jubran, Zbigniew Tokarski, Vytautas Getautis, Maryte Daskeviciene, Tadas Malinauskas, Jonas Sidaravicius, Vygintas Jankauskas: Hydrazone-based charge transport materials. Samsung Electronics, Patterson Thuente Skaar & Christensen P A, February 20, 2007: US07179574 (2 worldwide citation)

Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, R4, R5, R6, R7, and R8, are, each independe ...


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Zbigniew Tokarski, Nusrallah Jubran, Ramunas Lygaitis, Juozas V Grazulevicius, Edmundas Montrimas, Jonas Sidaravicius: Bridged charge transport materials having two bicyclic heterocycle hydrazones. Samsung Electronics, Patterson Thuente Skaar & Christensen P A, May 22, 2007: US07220523 (2 worldwide citation)

Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, R4, R5, and R6 comprise, each independently ...


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Tokarski Zbigniew, Gintaras Buika T, Jonas Sidaravicius, Grazulevicius Vidas Juozas, Jubran Nusrallah, Ruta Budreckiene, Vygintas Jankauskas: Organophotoreceptor with charge transport material having three arylamino groups. Samsung Electronics, May 11, 2005: EP1530094-A2 (2 worldwide citation)

The present invention provides organophotoreceptors comprising an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, and R4 are, indepen ...


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Zbigniew Tokarsi, Nusrallah Jubran, Vytautas Getautis, Ingrida Paulauskaite, Vygintas Jankauskas, Jonas Sidaravicius: Organophotoreceptor with a charge transport material having at least three linked hydrazone groups. Samsung Electronics, Patterson Thuente Skaar & Christensen P A, October 10, 2006: US07118840 (1 worldwide citation)

Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where n is an integer between 3 and 6; R1 and R2 are, each in ...


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Nusrallah Jubran, Patrick Knoll, Vytautas Getautis, Tadas Malinauskas, Maryte Daskeviciene, Edmundas Montrimas, Jonas Sidaravicius: Charge transport materials having at least a metallocene group. Samsung Electronics, Patterson Thuente Skaar & Christensen, May 27, 2008: US07378203 (1 worldwide citation)

Improved charge transport material comprises the formula: where M comprises a metallocenyl group; Y comprises a functional group selected from the group consisting of a metallocenyl group, a hydrazone group, an azine group, a reactive ring group, an ethylenically unsaturated group, and combinations ...