Patents by Inventor Sean X. Pan
Sean X. Pan 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: 7380976Abstract: A device comprising a flow channel having an inlet for introducing a flow of a first material, an outlet for exiting a flow of a second material; a plunger disposed and slidably movable coaxially within the flow channel; a first cooling device disposed adjacent to and substantially surrounding the flow channel comprising a housing having an internal sealable chamber for containing a first cooling fluid, an inlet having a first seal, and an outlet having a second seal, wherein the first cooling fluid is sealable within the sealable chamber; a second cooling device disposed adjacent to and substantially surrounding the first cooling device comprising a housing having an internal channel for a flow of a second cooling fluid, an inlet in fluid communication with the internal channel, an outlet in fluid communication with the channel, and a device for controlling the flow of second cooling fluid.Type: GrantFiled: July 18, 2005Date of Patent: June 3, 2008Assignee: Xerox CorporationInventors: Debra A. Mattison, Mark C. Petropoulos, Mark S. Thomas, Sean X. Pan
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Patent number: 7232634Abstract: A charge transport layer for an imaging member comprising a charge transport material with a nitrogen molecular defense system not exhibiting early onset of charge transport layer fatigue cracking. The nitrogen molecular defense system includes attaching bulky organic groups to charge transport materials. The bulky groups aid in preventing recrystallization of the charge transport molecule and shield the nitrogen from molecular attack, such as by oxidation. The charge transport layer exhibits excellent wear resistance, excellent electrical performance, and outstanding print quality.Type: GrantFiled: September 30, 2004Date of Patent: June 19, 2007Assignee: Xerox CorporationInventors: Yuhua Tong, Timothy J. Fuller, Sean X. Pan, John F. Yanus, Alexander N. Klymachyov, Min-Hong Fu, Dennis J. Prosser, Susan M. VanDusen
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Patent number: 6991880Abstract: A member including for example, a substrate, a charge generating layer, a charge transport layer comprising a poly(phenylsilsesquioxane), molecule, and a film forming binder.Type: GrantFiled: July 23, 2002Date of Patent: January 31, 2006Assignee: Xerox CorporationInventors: Yuhua Tong, Timothy J. Fuller, Sean X. Pan, John F. Yanus, Cindy C. Chen, Min-Hong Fu, Dennis J. Prosser, Susan M. VanDusen
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Patent number: 6953060Abstract: An apparatus comprising: (a) a substrate including a level intermediate region disposed between a first end region and a second end region; (b) a first external member disposed circumferentially around the first end region in a continuous manner and protruding above the level intermediate region, thereby resulting in a deposition region including the surface of the first external member covering the first end region, an optional exposed first end region portion, and the intermediate region; and (c) a dip coated layer over the entire deposition region, wherein the portion of the dip coated layer over the first external member and the optional exposed first end region portion is formed prior to the portion of the dip coated layer over the intermediate layer.Type: GrantFiled: December 19, 2001Date of Patent: October 11, 2005Assignee: Xerox CorporationInventors: Sean X. Pan, Mark S. Thomas, Mark C. Petropoulos
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Patent number: 6875548Abstract: A photoconductive imaging member including an optional supporting substrate, a photogenerating layer, and a charge transport layer, and wherein said layer includes a charge transport component and a polysiloxane.Type: GrantFiled: February 19, 2003Date of Patent: April 5, 2005Assignee: Xerox CorporationInventors: Yuhua Tong, Timothy J. Fuller, John F. Yanus, Dale S. Renfer, Markus R. Silvestri, Cindy C. Chen, Dennis J. Prosser, Susan M. VanDusen, Lanhui Zhang, Sean X. Pan
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Patent number: 6869651Abstract: An apparatus including: (a) a substrate including a deposition region and an optional uncoated region, wherein the deposition region includes a level intermediate region disposed between a first end region and a second end region, wherein the first end region includes a first raised surface portion extending above the level intermediate region and extending circumferentially around the first end region in a continuous manner; and (b) a dip coated layer over the entire deposition region.Type: GrantFiled: December 19, 2001Date of Patent: March 22, 2005Assignee: Xerox CorporationInventors: Sean X. Pan, Mark C. Petropoulos, Linnette Perales Rivera, Jeremy B. Pinsly, Zhilei Wang, Mark S. Thomas
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Publication number: 20040175637Abstract: A photoconductive imaging member including an optional supporting substrate, a photogenerating layer, and a charge transport layer, and wherein said layer includes a charge transport component and a polysiloxane.Type: ApplicationFiled: February 19, 2003Publication date: September 9, 2004Applicant: Xerox CorportionInventors: Yuhua Tong, Timothy J. Fuller, John F. Yanus, Dale S. Renfer, Markus R. Silvestri, Cindy C. Chen, Dennis J. Prosser, Susan M. VanDusen, Lanhui Zhang, Sean X. Pan
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Publication number: 20040018439Abstract: A member including for example, a substrate, a charge generating layer, a charge transport layer comprising a poly(phenylsilsesquioxane), molecule, and a film forming binder.Type: ApplicationFiled: July 23, 2002Publication date: January 29, 2004Applicant: Xerox CorporationInventors: Yuhua Tong, Timothy J. Fuller, Sean X. Pan, John F. Yanus, Cindy C. Chen, Min-Hong Fu, Dennis J. Prosser, Susan M. VanDusen
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Patent number: 6652910Abstract: An apparatus, to be used when an open end of a hollow substrate contacts a coating solution to define a solution free interior portion of the substrate, for controlling the level of the coating solution relative to the substrate interior, the apparatus including: a gas container capable of changing in volume; a channel connecting the gas container to the solution free interior portion of the substrate to allow gas flow in either direction between the gas container and the solution free interior portion; and pressure means for exerting a changeable, continuous pressure on the gas container that automatically exerts an increasingly greater pressure on the gas container as the gas container expands in volume and that automatically exerts a decreasingly lesser pressure on the gas container as the gas container decreases in volume.Type: GrantFiled: February 8, 2002Date of Patent: November 25, 2003Assignee: Xerox CorporationInventors: Sean X. Pan, Mark C. Petropoulos
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Patent number: 6613237Abstract: It is desired to remove matter on a fluid surface of a tank. The tank defines a circular tank orifice comprising a tank orifice rim, the tank orifice rim containing a fluid surface of a fluid, the fluid overflowing the tank orifice rim to form a fluid overflow, the fluid surface defining a fluid surface center. The matter is removed by discharging from near the tank orifice rim a plurality (n) of jets of the fluid towards the fluid surface center. Any matter on the fluid surface is thereby urged toward the tank orifice rim and eventually removed from the fluid surface by the fluid overflow. In one application, the tank comprises a dip tank and the fluid comprises photoreceptor coating solution or components thereof such as solvents, additives, or both.Type: GrantFiled: January 14, 2002Date of Patent: September 2, 2003Assignee: Xerox CorporationInventors: Sean X. Pan, Peter J. Schmitt
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Publication number: 20030152697Abstract: An apparatus, to be used when an open end of a hollow substrate contacts a coating solution to define a solution free interior portion of the substrate, for controlling the level of the coating solution relative to the substrate interior, the apparatus including: a gas container capable of changing in volume; a channel connecting the gas container to the solution free interior portion of the substrate to allow gas flow in either direction between the gas container and the solution free interior portion; and pressure means for exerting a changeable, continuous pressure on the gas container that automatically exerts an increasingly greater pressure on the gas container as the gas container expands in volume and that automatically exerts a decreasingly lesser pressure on the gas container as the gas container decreases inType: ApplicationFiled: February 8, 2002Publication date: August 14, 2003Applicant: Xerox CorporationInventors: Sean X. Pan, Mark C. Petropoulos
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Publication number: 20030132159Abstract: It is desired to remove matter on a fluid surface of a tank. The tank defines a circular tank orifice comprising a tank orifice rim, the tank orifice rim containing a fluid surface of a fluid, the fluid overflowing the tank orifice rim to form a fluid overflow, the fluid surface defining a fluid surface center. The matter is removed by discharging from near the tank orifice rim a plurality (n) of jets of the fluid towards the fluid surface center. Any matter on the fluid surface is thereby urged toward the tank orifice rim and eventually removed from the fluid surface by the fluid overflow. In one application, the tank comprises a dip tank and the fluid comprises photoreceptor coating solution or components thereof such as solvents, additives, or both.Type: ApplicationFiled: January 14, 2002Publication date: July 17, 2003Applicant: Xerox CorporationInventors: Sean X. Pan, Peter J. Schmitt
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Publication number: 20030113471Abstract: A coating method for a substrate defining a deposition region and an optional uncoated region, wherein the deposition region includes an intermediate region disposed between a first end region and a second end region, the method composed of: (a) dip coating a first layer of a coating solution including a liquid medium and a coating material only over the first end region; and (b) dip coating a second layer of the coating solution over the first layer, the intermediate region, and the second end region in the recited sequence.Type: ApplicationFiled: December 19, 2001Publication date: June 19, 2003Applicant: Xerox CorporationInventors: Sean X. Pan, Cindy C. Chen
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Publication number: 20030113469Abstract: An apparatus including:Type: ApplicationFiled: December 19, 2001Publication date: June 19, 2003Applicant: Xerox CorporationInventors: Sean X. Pan, Mark C. Petropoulos, Linnette Perales Rivera, Jeremy B. Pinsly, Zhilei Wang, Mark S. Thomas
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Publication number: 20030113470Abstract: An apparatus comprising:Type: ApplicationFiled: December 19, 2001Publication date: June 19, 2003Applicant: Xerox CorporationInventors: Sean X. Pan, Mark S. Thomas, Mark C. Petropoulos
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Patent number: 6576299Abstract: A coating method for a substrate defining a deposition region and an optional uncoated region, wherein the deposition region includes an intermediate region disposed between a first end region and a second end region, the method composed of: (a) dip coating a first layer of a coating solution including a liquid medium and a coating material only over the first end region; and (b) dip coating a second layer of the coating solution over the first layer, the intermediate region, and the second end region in the recited sequence.Type: GrantFiled: December 19, 2001Date of Patent: June 10, 2003Assignee: Xerox CorporationInventors: Sean X. Pan, Cindy C. Chen