Patents by Inventor Gintaras Buika
Gintaras Buika 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: 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: 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: 7344811Abstract: 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 and m are each a distribution of integers, and the n units of R1—Si—X1—Ar1 and m units of R2—Si—X2—Ar2—X3-Z form either a random, an alternative, or a block copolymer; R1 and R2 comprise, each independently, an alkyl group, an alkoxy group, an alkenyl group, an alkynyl group, a heterocyclic group, or an aromatic group; X1, X2, and X3 comprise, each independently, a bond or a linking group; A1 and A2 are each a terminal group; Ar1 and Ar2 comprise, each independently, an aromatic group; and Z comprises a functional group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and methods of preparing the polymeric charge transport material are described.Type: GrantFiled: October 28, 2004Date of Patent: March 18, 2008Assignee: Samsung Electronic Co., Ltd.Inventors: Asta Michaleviciute, Gintaras Buika, Juozas V. Grazulevicius, Zaimantas Peleckas, Edmundas Montrimas, Jonas Sidaravicius
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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: 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: 7189483Abstract: An improved organophotoreceptor includes an electrically conductive substrate and a photoconductive element on the electrically conductive substrate where the photoconductive element comprises: a) a charge transport material having the following formula: where X is a linking group; Y1 and Y2 are, each independently, a phenothiazine group, a phenoxazine group, or a phenazine group; R1, R2, R3, and R4 are, each independently, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; and R5 and R6 are, each independently, a hydrogen, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.Type: GrantFiled: February 27, 2004Date of Patent: March 13, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Almantas Danilevicius, Gintaras Buika, Ramunas Lygaitis, Juozas V. Grazulevicius, Robertas Maldzius, Edmundas Montrimas, Zbigniew Tokarski, Nusrallah Jubran
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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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Publication number: 20060093933Abstract: 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 and m are each a distribution of integers, and the n units of R1—Si—X1—Ar1 and m units of R2—Si—X2—Ar2—X3-Z form either a random, an alternative, or a block copolymer; R1 and R2 comprise, each independently, an alkyl group, an alkoxy group, an alkenyl group, an alkynyl group, a heterocyclic group, or an aromatic group; X1, X2, and X3 comprise, each independently, a bond or a linking group; A1 and A2 are each a terminal group; Ar1 and Ar2 comprise, each independently, an aromatic group; and Z comprises a functional group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and methods of preparing the polymeric charge transport material are described.Type: ApplicationFiled: October 28, 2004Publication date: May 4, 2006Inventors: Asta Michaleviciute, Gintaras Buika, Juozas Grazulevicius, Zaimantas Peleckas, Edmundas Montrimas, Jonas Sidaravicius
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Publication number: 20060078351Abstract: 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: ApplicationFiled: October 12, 2004Publication date: April 13, 2006Inventors: Juozas Grazulevicius, Gintaras Buika, Vygintas Jankauskas, Valentas Gaidelis, Ruta Budreckiene, Zbigniew Tokarski, Nusrallah Jubran
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Patent number: 7008743Abstract: 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, 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 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 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 alkyl group, a heterocyclic group, or an aryl group; V comprises a vinyl ether group; and Z comprises an (N,N-disubstituted)arylamine group, such as a carbazole group, a julolidine group, or a p-(N,N-disubstituted)arylamine group; and (b) a charge generating compound.Type: GrantFiled: October 31, 2003Date of Patent: March 7, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Juozas Vidas Grazulevicius, Gintaras Buika, Vygintas Jankauskas, Valentas Gaidelis, Ruta Budreckiene, Zbigniew Tokarski, Nusrallah Jubran
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Publication number: 20060046171Abstract: 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: ApplicationFiled: August 30, 2004Publication date: March 2, 2006Inventors: Ruta Budreckiene, Gintaras Buika, Juozas Grazulevicius, Vygintas Jankauskas, Jonas Sidaravicius, Nusrallah Jubran, Zbigniew Tokarski
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Publication number: 20060024598Abstract: 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: ApplicationFiled: July 30, 2004Publication date: February 2, 2006Inventors: Ruta Budreckiene, Gintaras Buika, Vygintas Jankauskas, Juozas Grazulevicius, Jonas Sidaravicius, Nusrallah Jubran, Zbigniew Tokarski
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Publication number: 20050244733Abstract: 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: ApplicationFiled: April 30, 2004Publication date: November 3, 2005Inventors: Zbigniew Tokarski, Nusrallah Jubran, Ruta Budreckiene, Gintaras Buika, Valentas Gaidelis, Juozas Grazulevicius, Vygintas Jankauskas
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Publication number: 20050095518Abstract: 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. Corresponding electrophotographic apparatuses and imaging methods are described.Type: ApplicationFiled: October 31, 2003Publication date: May 5, 2005Inventors: Juozas Grazulevicius, Gintaras Buika, Vygintas Jankauskas, Ruta Budreckiene, Jonas Sidaravicius, Zbigniew Tokarski, Nusrallah Jubran
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Publication number: 20050095517Abstract: 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, 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 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 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 alkyl group, a heterocyclic group, or an aryl group; V comprises a vinyl ether group; and Z comprises an (N,N-disubstituted)arylamine group, such as a carbazole group, a julolidine group, or a p-(N,N-disubstituted)arylamine group; and (b) a charge generating compound.Type: ApplicationFiled: October 31, 2003Publication date: May 5, 2005Inventors: Juozas Vidas Grazulevicius, Gintaras Buika, Vygintas Jankauskas, Valentas Gaidelis, Ruta Budreckiene, Zbigniew Tokarski, Nusrallah Jubran
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Publication number: 20040241563Abstract: An improved organophotoreceptor includes an electrically conductive substrate and a photoconductive element on the electrically conductive substrate where the photoconductive element comprises:Type: ApplicationFiled: February 27, 2004Publication date: December 2, 2004Inventors: Almantas Danilevicius, Gintaras Buika, Ramunas Lygaitis, Juozas V. Grazulevicius, Robertas Maldzius, Edmundas Montrimas, Zbigniew Tokarski, Nusrallah Jubran