Patents by Inventor James M. Duff
James M. Duff 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: 8202674Abstract: Polymers of naphthalene tetracarboxylic diimide dimmers are provided. The polymers are of the Formula I wherein the A units are selected from and Formula IX The polymers are suitable for use in the active layer of an imaging member and exhibit properties of both a binder and an electron-transporting material.Type: GrantFiled: October 11, 2010Date of Patent: June 19, 2012Assignee: Xerox CorporationInventors: Timothy P. Bender, John Graham, James M. Duff
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Publication number: 20110028724Abstract: Polymers of naphthalene tetracarboxylic diimide dimmers are provided. The polymers are of the Formula I wherein the A units are selected from and Formula IX The polymers are suitable for use in the active layer of an imaging member and exhibit properties of both a binder and an electron-transporting material.Type: ApplicationFiled: October 11, 2010Publication date: February 3, 2011Applicant: XEROX CORPORATIONInventors: Timothy P. Bender, John Graham, James M. Duff
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Patent number: 7820780Abstract: Polymers of naphthalene tetracarboxylic diimide dimmers are provided. The polymers are of the Formula I wherein the A units are selected from and Formula IX The polymers are suitable for use in the active layer of an imaging member and exhibit properties of both a binder and an electron-transporting material.Type: GrantFiled: June 5, 2009Date of Patent: October 26, 2010Assignee: Xerox CorporationInventors: Timothy P. Bender, John Graham, James M. Duff
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Patent number: 7754862Abstract: Disclosed is a compound comprising three or more moieties of the formula said moieties being bonded to a central atom, monomeric group of atoms, oligomer, or polymer. Also disclosed is a phase change ink composition comprising a phase change ink carrier and a colorant compound comprising three or more moieties of the formula said moieties being bonded to a central atom, monomeric group of atoms, oligomer, or polymer.Type: GrantFiled: November 30, 2007Date of Patent: July 13, 2010Assignee: Xerox CorporationInventors: James D Mayo, James M Duff
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Publication number: 20090234092Abstract: Polymers of naphthalene tetracarboxylic diimide dimmers are provided. The polymers are of the Formula I wherein the A units are selected from and Formula IX The polymers are suitable for use in the active layer of an imaging member and exhibit properties of both a binder and an electron-transporting material.Type: ApplicationFiled: June 5, 2009Publication date: September 17, 2009Applicant: Xerox CorporationInventors: Timothy P. Bender, John Graham, James M. Duff
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Patent number: 7544450Abstract: Polymers of naphthalene tetracarboxylic diimide dimmers are provided. The polymers are of the Formula I wherein the A units are selected from and Formula IX The polymers are suitable for use in the active layer of an imaging member and exhibit properties of both a binder and an electron-transporting material.Type: GrantFiled: March 19, 2008Date of Patent: June 9, 2009Assignee: Xerox CorporationInventors: Timothy P. Bender, John Graham, James M. Duff
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Patent number: 7449268Abstract: Polymers of naphthalene tetracarboxylic diimide dimmers are provided. The polymers are of the Formula I wherein the A units are selected from and Formula IX The polymers are suitable for use in the active layer of an imaging member and exhibit properties of both a binder and an electron-transporting material.Type: GrantFiled: May 27, 2005Date of Patent: November 11, 2008Assignee: Xerox CorporationInventors: Timothy P. Bender, John Graham, James M. Duff
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Publication number: 20080171275Abstract: Polymers of naphthalene tetracarboxylic diimide dimmers are provided. The polymers are of the Formula I wherein the A units are selected from and Formula IX The polymers are suitable for use in the active layer of an imaging member and exhibit properties of both a binder and an electron-transporting material.Type: ApplicationFiled: March 19, 2008Publication date: July 17, 2008Applicant: XEROX CORPORATIONInventors: Timothy P. Bender, John Graham, James M. Duff
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Patent number: 7381253Abstract: Disclosed is a compound comprising three or more moieties of the formula said moieties being bonded to a central atom, monomeric group of atoms, oligomer, or polymer. Also disclosed is a phase change ink composition comprising a phase change ink carrier and a colorant compound comprising three or more moieties of the formula said moieties being bonded to a central atom, monomeric group of atoms, oligomer, or polymer.Type: GrantFiled: December 3, 2004Date of Patent: June 3, 2008Assignee: Xerox CorporationInventors: James D. Mayo, James M. Duff
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Patent number: 7354685Abstract: A photoconductive member comprised of a hole blocking layer, a photogenerating layer, and a charge transport layer comprised of a polymer with a low dielectric constant and a charge transport component.Type: GrantFiled: January 26, 2005Date of Patent: April 8, 2008Assignee: Xerox CorporationInventors: Jin Wu, Liang-Bih Lin, James M. Duff, Timothy P. Bender
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Patent number: 7301025Abstract: Compounds of the formula wherein M is either (1) a metal ion having a positive charge of +p wherein p is an integer which is at least 2, said metal ion being capable of forming a compound with at least two chromogen moieties, or (2) a metal-containing moiety capable of forming a compound with at least two chromogen moieties, z is an integer representing the number of chromogen moieties associated with the metal and is at least 2, and R1, R2, R3, R4, R5, R6, R7, a, b, c, d, Y, Q?, A, and CA are as defined herein.Type: GrantFiled: June 1, 2005Date of Patent: November 27, 2007Assignee: Xerox CorporationInventors: Jeffery H. Banning, Bo Wu, James M. Duff, Wolfgang G. Wedler, Jule W. Thomas, Jr., Randall R. Bridgeman
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Patent number: 7297458Abstract: A photoconductive member containing a supporting substrate, a photogenerating layer, and a charge transport layer and wherein the photogenerating layer comprises a photogenerating component, and an electron transport component.Type: GrantFiled: June 29, 2004Date of Patent: November 20, 2007Assignee: Xerox CorporationInventors: Nancy L. Belknap, Andronique Ioannidis, Cindy C. Chen, Lanhui Zhang, James M. Duff, John F. Graham, Timothy P. Bender
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Patent number: 7291430Abstract: A member including for example, a substrate, a charge blocking layer, an optional adhesive layer, a charge generating layer comprising particles comprising a photogenerating layer of for example, chlorogallium phthalocyanine dispersed in a matrix comprising a charge transport molecule, an electron transport molecule which functions to sensitize the chlorogallium phthalocyanine pigment in the charge generating layer and mixtures thereof, and a film forming binder.Type: GrantFiled: July 2, 2002Date of Patent: November 6, 2007Assignee: Xerox CorporationInventors: Anna M. Main, Liang-Bih Lin, John S. Chambers, James M. Duff, Timothy P. Bender
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Patent number: 7223507Abstract: A photoconductive imaging member comprised of a supporting substrate, and thereover a single layer comprised of a mixture of a photogenerator component, charge transport components, and a certain electron transport component, and a certain polymer binder.Type: GrantFiled: April 4, 2003Date of Patent: May 29, 2007Assignee: Xerox CorporationInventors: Andronique Ioannidis, Nancy L. Belknap, Cindy C. Chen, Lanhui Zhang, Timothy P. Bender, John F. Graham, Ah-Mee Hor, James M. Duff
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Patent number: 7176317Abstract: Compounds of the formula wherein R1, R2, R3, R4, R5, R6, R7, a, b, c, d, Y, Q, Q—, A, and CA are as defined herein.Type: GrantFiled: June 26, 2003Date of Patent: February 13, 2007Assignee: Xerox CorporationInventors: Jeffery H. Banning, Bo Wu, James M. Duff, Wolfgang G. Wedler, Donald R. Titterington
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Patent number: 7115345Abstract: According to the present invention is an electrophotographic imaging member which is a thin dual layer structure comprising a top layer of a durable and wear-resistant layer and a bottom layer which is bipolar. The electrophotographic imaging member of the invention may be top surface charge generating or bottom surface charge generating and in either case has an overall negative charging mode of operation.Type: GrantFiled: February 17, 2004Date of Patent: October 3, 2006Assignee: Xerox CorporationInventors: Andronique Ioannidis, Timothy J. Fuller, Nancy L. Belknap, Markus R. Silvestri, Cindy C. Chen, Timothy P. Bender, John F. Graham, James M. Duff, Kenny-Tuan T. Dinh, John F. Yanus, James M. Markovics, Lanhui Zhang
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Patent number: 7070892Abstract: A photoconductive imaging member containing a supporting substrate, and thereover a single layer comprised of a photogenerator component, a charge transport component, an electron transport component, and a polymer binder.Type: GrantFiled: January 27, 2004Date of Patent: July 4, 2006Assignee: Xerox CorporationInventors: Timothy P. Bender, John F. Graham, James M. Duff, Andronique Ioannidis, Nancy L. Belknap
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Patent number: 7037630Abstract: A photoconductive imaging member comprised of a supporting substrate, and thereover a single photoactive layer comprised of a mixture of a photogenerator component, an electron transport component, a transport component, and a polymeric binder; and wherein said photogenerating component is comprised of a mixture of a metal free phthalocyanine and a hydroxygallium phthalocyanine.Type: GrantFiled: January 30, 2003Date of Patent: May 2, 2006Assignee: Xerox CorporationInventors: Cuong Vong, John F. Graham, Ah-Mee Hor, James M. Duff
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Patent number: 7011916Abstract: A compound having the Formula I wherein: R1 is independently selected from the group consisting of a straight chain alkyl group, a branched alkyl group, a cycloalkyl group, an alkoxy group, a monocyclic aromatic group, a polycyclic aromatic group, an alkylaryl group, or an arylalkyl group; R2 and R3 are independently selected from the group consisting of a straight chain alkyl group, a branched alkyl group, a cycloalkyl group, an alkoxy group, a monocyclic aromatic group, a polycyclic aromatic group, a heterocyclic group, an alkylaryl group, an arylalkyl group, an alkoxyaryl group, an arylalkoxy group, a halogen, and hydrogen; R4, R5, R6, R7, R8, R9, R10 and R11 are independently selected from the group consisting of a straight chain alkyl group, a branched alkyl group, a cycloalkyl group, an alkoxy group, a monocyclic aromatic group, a polycyclic aromatic group, an alkylaryl group, an arylalkyl group, an alkoxyaryl group, an arylalkoxy group, an aryloxy group, a halogen, and hydrogen.Type: GrantFiled: July 16, 2004Date of Patent: March 14, 2006Assignee: Xerox CorporationInventors: Timothy P. Bender, John F. Graham, James M. Duff
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Patent number: 6998493Abstract: Compounds of the formula wherein M is either (1) a metal ion having a positive charge of +p wherein p is an integer which is at least 2, said metal ion being capable of forming a compound with at least two chromogen moieties, or (2) a metal-containing moiety capable of forming a compound with at least two chromogen moieties, z is an integer representing the number of chromogen moieties associated with the metal and is at least 2, and R1, R2, R3, R4, R5, R6, R7, a, b, c, d, Y, Q?, A, and CA are as defined herein.Type: GrantFiled: June 26, 2003Date of Patent: February 14, 2006Assignee: Xerox CorporationInventors: Jeffery H. Banning, Bo Wu, James M. Duff, Wolfgang G. Wedler, Jule W. Thomas, Jr., Randall R. Bridgeman