Patents by Inventor John F. Graham

John F. Graham 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).

  • Patent number: 8899937
    Abstract: Systems and methods for reducing wind pressure on wind turbine blades by selectively opening excessive wind portals in the turbine blades. One embodiment comprises a wind turbine system in which each of the turbine's blades has a portal therethrough that is opened or closed by a movable panel. Each panel is connected on one edge to the corresponding blade at the edge of the portal. Hook-and-loop material (Velcro) is attached to the edges of each portal and panel, allowing the panels to alternately open and then close the portals over a series of high wind events. Excessive wind pressure forces the panels to be released, opening the portals. Gravity or reversed wind direction with respect to the blade can be used to reseal the panels.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: December 2, 2014
    Assignee: Building Turbines, Inc.
    Inventors: John F. Graham, Jonathan A. Paden
  • Publication number: 20130017083
    Abstract: Systems and methods for reducing wind pressure on wind turbine blades by selectively opening excessive wind portals in the turbine blades. One embodiment comprises a wind turbine system in which each of the turbine's blades has a portal therethrough that is opened or closed by a movable panel. Each panel is connected on one edge to the corresponding blade at the edge of the portal. Hook-and-loop material (Velcro) is attached to the edges of each portal and panel, allowing the panels to alternately open and then close the portals over a series of high wind events. Excessive wind pressure forces the panels to be released, opening the portals. Gravity or reversed wind direction with respect to the blade can be used to reseal the panels.
    Type: Application
    Filed: July 11, 2011
    Publication date: January 17, 2013
    Inventors: John F. Graham, Jonathan A. Paden
  • Patent number: 8257020
    Abstract: Systems and methods for capturing the energy of wind currents by placing wind-driven turbines in vortices formed near one or more edges of a building's roof, where the wind currents are concentrated by deflection of the wind off the horizontal faces of the building. In one embodiment, a cylindrical wind turbine is placed near the edge of a building's rooftop. The turbine structure drives an electrical generator. The axis of rotation of the turbine is parallel to the ground and to the edge of the building. A concentrator may be used to concentrate vortex winds into the turbine. Turbines can be installed on multiple sides of the building to optimize the system for variations in wind direction with changes in seasons or weather conditions.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: September 4, 2012
    Inventor: John F. Graham, Sr.
  • Patent number: 8148039
    Abstract: An aromatic silicon-containing compound has the formula: Ar—[X-L-SiRn(OR?)3-n]m where Ar represents an aromatic group, X represents a divalent or trivalent group; L represents a divalent linking group; R represents a hydrogen atom, an alkyl group or an aryl group; R? represents an alkyl group having 1 to 5 carbon atoms; n is an integer of from 0 to 2; and m is an integer of from 1 to 5. The aromatic silicon-containing compound can be used in electrophotographic photoreceptors, particularly in outmost protective layers of such electrophotographic photoreceptors.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: April 3, 2012
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, John F. Graham, Timothy P. Bender, Ah-Mee Hor, Yvan Gagnon, Cheng-Kuo Hsiao
  • Patent number: 7851113
    Abstract: Overcoat layers, which may be useful for reducing torque in electrophotographic photoreceptors, are provided. The overcoat layers include a polymer matrix having a particulate inorganic lubricant and a particulate fluoropolymer uniformly dispersed therein. Also provided are electrophotographic photoreceptors that include a substrate and the overcoat layers, electrophotographic imaging apparatuses that include such photoreceptors, and methods for forming the photoreceptors.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: December 14, 2010
    Assignee: Xerox Corporation
    Inventors: Timothy P. Bender, Nan-Xing Hu, John F. Graham, Yvan Gagnon, Cheng-Kuo Hsiao, Sandra J. Gardner, Kathy L. De Jong, James M. Markovics
  • Patent number: 7795462
    Abstract: An aromatic silicon-containing compound has the formula: Ar—[X-L-SiRn(OR?)3-n]m where Ar represents an aromatic group, X represents a divalent or trivalent group; L represents a divalent linking group; R represents a hydrogen atom, an alkyl group or an aryl group; R? represents an alkyl group having 1 to 5 carbon atoms; n is an integer of from 0 to 2; and m is an integer of from 1 to 5. The aromatic silicon-containing compound can be used in electrophotographic photoreceptors, particularly in outmost protective layers of such electrophotographic photoreceptors.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: September 14, 2010
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, John F. Graham, Timothy P. Bender, Ah-Mee Hor, Yvan Gagnon, Cheng-Kuo Hsiao
  • Publication number: 20100035169
    Abstract: An aromatic silicon-containing compound has the formula: Ar—[X-L-SiRn(OR?)3-n]m where Ar represents an aromatic group, X represents a divalent or trivalent group; L represents a divalent linking group; R represents a hydrogen atom, an alkyl group or an aryl group; R? represents an alkyl group having 1 to 5 carbon atoms; n is an integer of from 0 to 2; and m is an integer of from 1 to 5. The aromatic silicon-containing compound can be used in electrophotographic photoreceptors, particularly in outmost protective layers of such electrophotographic photoreceptors.
    Type: Application
    Filed: September 14, 2009
    Publication date: February 11, 2010
    Applicant: XEROX CORPORATION
    Inventors: Yu QI, Nan-Xing HU, John F. GRAHAM, Timothy P. BENDER, Ah-Mee HOR, Yvan GAGNON, Cheng-Kuo HSIAO
  • Patent number: 7588875
    Abstract: A toner having at least one binder, at least one colorant and external additives. The external additives include at least one fluoropolymer. An electrophotographic image forming machine and method includes the toner with at least one fluoropolymer.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: September 15, 2009
    Assignee: Xerox Corporation
    Inventors: Nan-Xing Hu, Cuong Vong, John F. Graham, Richard P. N. Veregin
  • Publication number: 20090167025
    Abstract: Systems and methods for capturing the energy of wind currents by placing wind-driven turbines in vortices formed near one or more edges of a building's roof, where the wind currents are concentrated by deflection of the wind off the horizontal faces of the building. In one embodiment, a cylindrical wind turbine is placed near the edge of a building's rooftop. The turbine structure drives an electrical generator. The axis of rotation of the turbine is parallel to the ground and to the edge of the building. A concentrator may be used to concentrate vortex winds into the turbine. Turbines can be installed on multiple sides of the building to optimize the system for variations in wind direction with changes in seasons or weather conditions.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 2, 2009
    Inventor: John F. Graham, SR.
  • Patent number: 7517928
    Abstract: Siloxane-containing materials that have been prepared by a sol-gel method and polymeric binder materials from interpenetrating networks. Silicon-containing layers including such interpenetrating networks are provided. Methods for preparing interpenetrating networks and silicon-containing layers including interpenetrating networks are also provided. In addition, photoreceptors and image-forming apparatus including such silicon-containing layers are provided.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: April 14, 2009
    Assignee: Xerox Corporation
    Inventors: Timothy P Bender, Barkev Keoshkerian, John F Graham, Yvan Gagnon, Cheng-Kuo Hsiao, Nan-Xing Hu
  • Patent number: 7514192
    Abstract: A photoconductive member component comprising a supporting substrate and thereover a photogenerating layer comprising a tetrahalobenzamidazolebenzene or a bis(tetrahalophenyl)biphenylbisimidazole of the alternative following formulas or dimers thereof wherein each of R1, R2, R3, R4, and R5 are the same or different and are independently selected from the group comprising hydrogen, alkyl, aryl, and halogen, and a charge transport layer component.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: April 7, 2009
    Assignee: Xerox Corporation
    Inventors: James McConnell Duff, Timothy P. Bender, Cuong Vong, John F. Graham
  • Patent number: 7491989
    Abstract: An imaging member includes a substrate, a charge transport layer, a charge generator layer, and a charge transporting or photoconductive overcoating layer.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: February 17, 2009
    Assignee: Xerox Corporation
    Inventors: Rafik O. Loutfy, Zoran D. Popovic, John F. Graham, Timothy P. Bender
  • Patent number: 7473785
    Abstract: A compound comprising a tetrahalobenzamidazolebenzene or a bis(tetrahalophenyl)biphenylbisimidazole of the alternative following formulas or dimers thereof wherein each of R1, R2, R3, R4, and R5 are the same or different and are independently selected from the group comprising hydrogen, alkyl, aryl, and halogen.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: January 6, 2009
    Assignee: Xerox Corporation
    Inventors: James McConnell Duff, Timothy P. Bender, Cuong Vong, John F. Graham
  • Publication number: 20080318145
    Abstract: A toner having at least one binder, at least one colorant and external additives. The external additives include at least one fluoropolymer. An electrophotographic image forming machine and method includes the toner with at least one fluoropolymer.
    Type: Application
    Filed: September 2, 2008
    Publication date: December 25, 2008
    Applicant: XEROX CORPORATION
    Inventors: Nan-Xing HU, Cuong VONG, John F. GRAHAM, Richard P.N. VEREGIN
  • Patent number: 7452646
    Abstract: A toner having at least one binder, at least one colorant and external additives. The external additives include at least one fluoropolymer. An electrophotographic image forming machine and method includes the toner with at least one fluoropolymer.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: November 18, 2008
    Assignee: Xerox Corporation
    Inventors: Nan-Xing Hu, Cuong Vong, John F. Graham, Richard P. N. Veregin
  • Patent number: 7425698
    Abstract: An interfacial force microscope includes a differential-capacitance displacement sensor having a tip mounted on an oscillating member. The sensor generates displacement signals in response to oscillations of the member. A scanner is adjacent the sensor and supports a sample to be imaged. The scanner is actuable to move the sample relative to the sensor to bring the tip into intermittent contact with said sample as the member oscillates. A controller is in communication with the sensor and the scanner. The controller includes a sensor feedback circuit receiving the displacement signals and an AC setpoint signal. The AC setpoint signal has a frequency generally equal to the frequency at the peak of the displacement versus frequency curve of the sensor. The output of the sensor feedback circuit is applied to the sensor to oscillate the member. The controller also provides output to the scanner in response to the displacement signals to control the separation distance between the sensor and the sample.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: September 16, 2008
    Inventors: Oden L. Warren, Peter R. Norton, John F. Graham
  • Publication number: 20080166643
    Abstract: Overcoat layers, which may be useful for reducing torque in electrophotographic photoreceptors, are provided. The overcoat layers include a polymer matrix having a particulate inorganic lubricant and a particulate fluoropolymer uniformly dispersed therein. Also provided are electrophotographic photoreceptors that include a substrate and the overcoat layers, electrophotographic imaging apparatuses that include such photoreceptors, and methods for forming the photoreceptors.
    Type: Application
    Filed: December 13, 2006
    Publication date: July 10, 2008
    Applicant: XEROX CORPORATION
    Inventors: Timothy P. Bender, Nan-Xing Hu, John F. Graham, Yvan Gagnon, Cheng-Kuo Hsiao, Sandra J. Gardner, Kathy L. De Jong, James M. Markovics
  • Patent number: 7348447
    Abstract: Processes for preparing aromatic matrix materials by metal hydrosilylation followed by alcholysis are provided. Silicon-containing layers that contain such aromatic matrix materials are also provided, as well as electrophotographic photoreceptors and electrophotographic imaging apparatuses containing such silicon-containing layers.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: March 25, 2008
    Assignee: Xerox Corporation
    Inventors: Timothy P. Bender, John F. Graham, Yvan Gagnon, Cheng-Kuo Hsiao, Nan-Xing Hu, Yu Qi
  • Patent number: 7315093
    Abstract: Systems and methods for capturing the energy of wind currents by placing wind-driven turbines at one or more edges of a building's roof, where the wind currents are concentrated by deflection of the wind off the horizontal faces of the building. In one embodiment, a cylindrical wind turbine is placed at the edge of a building's rooftop. The turbine structure drives an electrical generator. The axis of rotation of the turbine is parallel to the ground and to the edge of the building. A concentrator may be used to direct rising winds into the turbine. Turbines can be installed on multiple sides of the building to optimize the system for variations in wind direction with changes in seasons or weather conditions.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: January 1, 2008
    Inventor: John F. Graham, Sr.
  • Patent number: 7297458
    Abstract: 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: Grant
    Filed: June 29, 2004
    Date of Patent: November 20, 2007
    Assignee: Xerox Corporation
    Inventors: Nancy L. Belknap, Andronique Ioannidis, Cindy C. Chen, Lanhui Zhang, James M. Duff, John F. Graham, Timothy P. Bender