Patents by Inventor Vygintas Jankauskas
Vygintas Jankauskas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7534540Abstract: An 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 X and X? are, each independently, a linking group; Ar comprises an aromatic group; R1, R2, and R3 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and E1 and E2 are, each independently, a reactive ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and a polymeric charge transport material prepared from the charge transport material above are described.Type: GrantFiled: April 29, 2004Date of Patent: May 19, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Vygintas Jankauskas, Tadas Malinauskas, Edmundas Montrimas
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Patent number: 7432028Abstract: This invention relates to a novel organophotoreceptor that includes: (a) a charge transport composition comprising molecules having the formula where n is an average of a distribution of integers generally between 2 and 50,000, and in which n is at least 2; R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; X comprises an (N,N-disubstituted)arylamine group; and Y is a bridging group; (b) a charge generating compound; and (c) an electrically conductive substrate over which the charge transport composition and the charge generating compound are located.Type: GrantFiled: February 4, 2004Date of Patent: October 7, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Vytautas Getautis, Tadas Malinauskas, Juozas V. Grazulevicius, Valentas Gaidelis, Vygintas Jankauskas, Zbigniew Tokarski, Nusrallah Jubran, Kam W. Law
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Patent number: 7427460Abstract: 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 Ar is an aryl group; X comprises a bond or a linking group; R1, R2, and R3 each comprise H, a carboxyl, an amino group, a halogen, an alkyl group, an acyl group, an alkoxy group, an alkylsulfanyl group, an alkenyl group, an alkynyl group, a heterocyclic group, an aromatic group, or a part of a ring group; R4 comprises H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and R5, R6, R7, and R8 each comprise an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, a heterocyclic group, or a part of a ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.Type: GrantFiled: July 30, 2004Date of Patent: September 23, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Ruta Budreckiene, Gintaras Buika, Vygintas Jankauskas, Juozas V. Grazulevicius, Jonas Sidaravicius, Nusrallah Jubran, Zbigniew Tokarski
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Patent number: 7364825Abstract: 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 E comprises a functional group selected from the group consisting of a reactive ring group, an ethylenically unsaturated group, a hydrazone group, and an azine group; R1, R2, and R3 comprise, each independently, H or an organic group; X is a bond or a linking group, with the proviso that when E comprises a reactive ring group, X is a linking group; and Y is a nitrogen-containing aromatic heterocyclic group; and (b) a charge generating compound.Type: GrantFiled: February 7, 2005Date of Patent: April 29, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Ramunas Lygaitis, Juozas V. Grazulevicius, Valentas Gaidelis, Vygintas Jankauskas
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Patent number: 7351508Abstract: 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 Y comprises an aromatic group; V1 and V2 comprise, each independently, a vinyl containing group; and R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an acyl group, an ether group, an ester group, an alkenyl group, an alkynyl group, a heterocyclic group, an aromatic group, or a part of a ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, electrophotographic imaging methods, and charge transport materials are also described.Type: GrantFiled: October 12, 2004Date of Patent: April 1, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Juozas V. Grazulevicius, Gintaras Buika, Vygintas Jankauskas, Valentas Gaidelis, Ruta Budreckiene, Zbigniew Tokarski, Nusrallah Jubran
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Patent number: 7348116Abstract: 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 Y comprises an aromatic heterocyclic group; X is a bond or a linking group; E comprises a reactive ring group or a reactive functional group; and R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an acyl group, an ether group, an alkenyl group, an alkynyl group, a heterocyclic group, an aromatic group, or a part of a ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, electrophotographic imaging methods, and bridged charge transport materials derived form the charge transport material above are also described.Type: GrantFiled: September 3, 2004Date of Patent: March 25, 2008Assignee: Samsung Electronics, LtdInventors: Ausra Matoliukstyte, Valentas Gaidelis, Juozas V. Grazulevicius, Vygintas Jankauskas, Beata Klejevskaja, Nusrallah Jubran, Zbigniew Tokarski
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Patent number: 7326506Abstract: 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 Z1 and Z2 comprise, each independently, a bond, a vinyl group, a —CR1?N—NR2— group, or a —CR3?N—N?CR4— group; Y1 and Y2 comprise, each independently, an aromatic group; X1 and X2 are, each independently, a linking group; W1 and W2 are, each independently, a —(CH2)n— group or a —(CH2)n-1—C(?O)— group, where n is an integer between 1 and 10, inclusive; Q1 and Q2 are, each independently, O, S, or NR; and R1, R2, R3, R4, R, R?, and R? comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an acyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.Type: GrantFiled: May 28, 2004Date of Patent: February 5, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Nusrallah Jubran, Zbigniew Tokarski, Vytautas Getautis, Juozas V. Grazulevicius, Vygintas Jankauskas, Ingrida Paulauskaite, Jurate Simokaitiene, Albina Stanisauskaite, Valentas Gaidelis
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Patent number: 7320849Abstract: 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 are, each independently, an arylamine group; R1 and R2 comprise, each independently, H, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; X1 and X2, each independently, are bridging groups; E1 and E2 are, each independently, an epoxy group; and Z is a linking group comprising an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound. The charge transport materials can be crosslinked to a polymeric bind, either directly or through a crosslinking agent. Corresponding electrophotographic apparatuses and imaging methods are described.Type: GrantFiled: December 31, 2003Date of Patent: January 22, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Nusrallah Jubran, Zbigniew Tokarski, Vytautas Getautis, Tadas Malinauskas, Vygintas Jankauskas, Valentas Gaidelis
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Patent number: 7320848Abstract: An 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 X1 and X2 are, each independently, a linking group; Ar comprises an aromatic group; R1, R2, and R3 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and n is a distribution of integers between 1 and 100,000 with an average value of greater than one; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and methods of forming the charge transport material are described.Type: GrantFiled: March 31, 2004Date of Patent: January 22, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Vygintas Jankauskas, Tadas Malinauskas, Edmundas Montrimas
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Patent number: 7316878Abstract: 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 Ar comprises an aromatic group; X comprises a bond or a linking group; and R1, R2, R3, R4, and R5 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, a heterocyclic group, or a part of a ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.Type: GrantFiled: August 30, 2004Date of Patent: January 8, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Ruta Budreckiene, Gintaras Buika, Juozas V. Grazulevicius, Vygintas Jankauskas, Jonas Sidaravicius, Nusrallah Jubran, Zbigniew Tokarski
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Patent number: 7291433Abstract: An 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 comprising a polymer having the formula where X1 and X2 are, each independently, a bond or a linking group; Y comprises a bond or an arylamine group; Z comprises a bond, O, S, or NR4; R1 and R4 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; R2 and R3 comprise, each independently, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and n is a distribution of integers between 1 and 100,000 with an average value of greater than one; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and methods of forming the charge transport material are described.Type: GrantFiled: March 31, 2004Date of Patent: November 6, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Nusrallah Jubran, Zbigniew Tokarski, Vytautas Getautis, Juozas Vidas Grazulevicius, Ingrida Paulauskaitÿ, Jose Antonio Reina Lozano, Valentas Gaidelis, Vygintas Jankauskas
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Patent number: 7291431Abstract: 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 novel charge transport compound having the formula where X is a divalent hydrocarbon group of 1 to 30 carbon atoms, or a divalent hydrocarbon group of 1 to 30 carbon atoms where there is at least one substitution of a carbon atom by a heteroatom provided that no two heteroatoms may be adjacent within the backbone of an aliphatic divalent hydrocarbon radical, R1 is an aryl group or a heterocyclic group, R2 is a (N,N-disubstituted)arylamine group, and R3 is an epoxy group; and (b) a charge generating compound. The epoxy group can be reacted with a functional group within the polymer to form a polymeric charge transport compound either directly or through a crosslinking agent.Type: GrantFiled: March 2, 2006Date of Patent: November 6, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Zbigniew Tokarski, Nusrallah Jubran, Kam W. Law, Vytautas Getautis, Jonas V. Sidaravicius, Maryte Daskeviciene, Vygintas Jankauskas, Edmundas Montrimas, Valentas Gaidelis, Albina Stanisauskaite
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Patent number: 7244541Abstract: Improved organophotoreceptors comprise: (a) a charge transport compound having the formula ?where n is an integer from 0 to 1; X is an (N,N-disubstituted)arylamine group; Ar is an aryl group or a heterocyclic group; A is a first linking group with the formula —(CH2)p — which can be branched or linear, where p is an integer from 3 to 20 inclusive; and B is a second linking group having the formula -Q-Z-Q?, where Q and Q? are, independently, O, S, or NR1; wherein when Q or Q? is NR1 or Q=O and Q?=S, Z comprises an aryl group, and wherein when Q=Q?S or Q=Q?=O, Z comprises a multi-ring conjugated group; (b) a charge generating compound; and (c) an electrically conductive substrate over which said charge transport compound and said charge generating compound are located.Type: GrantFiled: November 15, 2005Date of Patent: July 17, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Edmundas Montrimas, Maryte Daskeviciene, Valentas Gaidelis, Vygintas Jankauskas
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Publication number: 20070148569Abstract: An 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 X and X? are, each independently, a linking group; Ar comprises an aromatic group; R1, R2, and R3 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and E1 and E2 are, each independently, a reactive ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and a polymeric charge transport material prepared from the charge transport material above are described.Type: ApplicationFiled: April 29, 2004Publication date: June 28, 2007Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Vygintas Jankauskas, Tadas Malinauskas, Edmundas Montrimas
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Patent number: 7202002Abstract: 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 alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; R3 and R4 are, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; X1 and X2 are, each independently, a linking group; Y1 and Y2, each independently, comprise an arylamino group; and Z is a bridging group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.Type: GrantFiled: April 30, 2004Date of Patent: April 10, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Zbigniew Tokarski, Nusrallah Jubran, Ruta Budreckiene, Gintaras Buika, Valentas Gaidelis, Juozas V. Grazulevicius, Vygintas Jankauskas
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Patent number: 7179574Abstract: 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 independently, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group; R9 and R10 are, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group; Ar1 and Ar2 are, each independently, an aromatic group; Y is an arylamine group; and X1 and X2 are, each independently, a linking group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.Type: GrantFiled: March 31, 2004Date of Patent: February 20, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Nusrallah Jubran, Zbigniew Tokarski, Vytautas Getautis, Maryte Daskeviciene, Tadas Malinauskas, Jonas Sidaravicius, Vygintas Jankauskas
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Patent number: 7169520Abstract: 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 2 and 6, inclusive; R1 and R2 are, independently, H, an alkyl group, an alkaryl group, or an aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 0 and 20, inclusive, and one or more of the methylene groups is optionally replaced by O, S, C?O, O?S?O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR3 group, a CHR4 group, or a CR5R6 group where R3, R4, R5, and R6 are, independently, H, hydroxyl group, thiol group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; Y comprises a bond, C, N, O, S, a branched or linear —(CH2)p— group where p is an integer between 0 and 10, an aromatic group, a cycloalkyl group, a heterocyclic grType: GrantFiled: October 31, 2003Date of Patent: January 30, 2007Assignee: Samsung Electronics Co., LtdInventors: Nusrallah Jubran, Zbigniew Tokarski, Juozas V. Grazulevicius, Vytautas Getautis, Jolita Ostrauskaite, Jurate Simokaitiene, Vygintas Jankauskas
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Patent number: 7169521Abstract: 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 alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; R3 and R4 are, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; X1 and X2 are, each independently, a linking group; Y1 and Y2, each independently, comprise an arylamine group; and Z is a bridging group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.Type: GrantFiled: April 30, 2004Date of Patent: January 30, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Jonas Sidaravicius, Edmundas Montrimas, Maryte Daskeviciene, Valentas Gaidelis, Vygintas Jankauskas, Albina Stanisauskaite
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Patent number: 7132209Abstract: 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 are, independently, H, an alkyl group, an alkaryl group, or an aryl group; X1 and X2 are, independently, a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 1 and 20, inclusive, and one or more of the methylene groups is optionally replaced by O, S, C?O, O?S?O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR5 group, a CHR6 group, or a CR7R8 group where R4, R5, R6, and R7 are, independently, H, hydroxyl group, thiol group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; and Y1, Y2, and Y3 are, independently, an arylamine group; and (b) a charge generating compound.Type: GrantFiled: October 31, 2003Date of Patent: November 7, 2006Assignee: Samsung Electronics Co., LtdInventors: Juozas Vidas Grazulevicius, Gintaras Buika, Vygintas Jankauskas, Ruta Budreckiene, Jonas Sidaravicius, Zbigniew Tokarski, Nusrallah Jubran
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Patent number: 7118840Abstract: 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 independently, H, an alkyl group, an alkenyl group, an aromatic group, or a heterocyclic group; R3, R4, and R5 are, each independently, H, thiol, hydroxyl, carboxyl, an amino group, a halogen, nitro, cyano, an alkyl group, an alkenyl group, an aromatic group, a heterocyclic group, or a part of a ring group; X1 and X2 are, each independently, a linking group; Y comprises an arylamine group; and Z is a bridging group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.Type: GrantFiled: December 31, 2003Date of Patent: October 10, 2006Assignee: Samsung Electronics Co., LTDInventors: Zbigniew Tokarsi, Nusrallah Jubran, Vytautas Getautis, Ingrida Paulauskaite, Vygintas Jankauskas, Jonas Sidaravicius