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Nusrallah Jubran, Zbigniew Tokarski, Terrance P Smith: Organophotoreceptors for electrophotography featuring novel charge transport compounds. Imation, Amelia A Buharin, January 22, 2002: US06340548 (56 worldwide citation)

Organic photoreceptors that include a charge transport compound, a charge generating compound, and an electroconductive support in which the charge transport compound is a novel aryl hydrazone-functional carbazole compound.


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Zbigniew Tokarski, Nusrallah Jubran, Ruta Budreckiene, Gintaras Buika, Valentas Gaidelis, Juozas V Grazulevicius, Vygintas Jankauskas: Hydrazone-based charge transport materials. Samsung Electronics, Patterson Thuente Skaar & Christensen P A, April 10, 2007: US07202002 (27 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 a ...


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Kam W Law, Nusrallah Jubran, Zbigniew Tokarski: Sulfonyldiphenylene-based charge transport compositions. Samsung Electronics, March 8, 2005: US06864025 (20 worldwide citation)

This invention relates to a novel organophotoreceptor that includes: (a) a charge transport composition comprising molecules having the formula where the average n is between 1 and 1000; R1, R2, R3, and R4 are, independently, hydrogen, a branched or linear alkyl group (e.g., a C1-C30 alkyl group), a ...


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Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Maryte Daskeviciene, Edmundas Montrimas, Valentas Gaidelis: Organophotoreceptor with an epoxy-modified charge transport compound having an azine group. Samsung Electronics, Patterson Thuente Skaar & Christensen P A, July 27, 2004: US06768010 (18 worldwide citation)

Organophotoreceptors comprise an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:


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Nusrallah Jubran, Zbigniew Tokarski, Maryte Daskeviciene, Valentas Gaidelis, Vytautas Getautis, Edmundas Montrimas, Albina Stanisauskaite: Charge transport materials having a central disulfane linkage. Samsung Electronics, DLA Piper US, November 4, 2008: US07445877 (15 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 Y1 and Y2 comprise, independently, an aromatic group; X ...


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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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Violeta Vaitkeviciene, Sauljus Grigalevicius, Juozas V Grazulevicius, Valentas Gaidelis, Robertas Mald hacek over, Zbigniew Tokarski, Nusrallah Jubran: Polymeric charge transport materials having carbazolyl repeating units. Samsung Electronics, Patterson Thuente Skaar & Christensen PA, February 12, 2008: US07329722 (11 worldwide citation)

Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a polymeric charge transport material having the formula where n is a distribution of integers between 1 and ...