Patents by Inventor Tuan Anh Vo
Tuan Anh Vo 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: 8853095Abstract: A method of forming damascene vias or dual damascene wires. The method includes using a patterned two layer hard mask wherein the patterns in the lower and upper hard mask layers are formed using a reactive ion etch process. Openings are then formed in the interlevel dielectric layer under the two layer hard mask using a second reactive ion etch process which also removes and the upper hard mask layer. The lower hard mask layer is then removed with a wet etch. Further processing completes forming the damascene vias or dual damascene wires.Type: GrantFiled: May 30, 2013Date of Patent: October 7, 2014Assignee: International Business Machines CorporationInventors: James J. Kelly, Tuan Anh Vo
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Publication number: 20110151963Abstract: A gaming device for taking sports related bets wherein the house offers various sports games for betting, based upon the final score combination, allowing players to select desired game(s) to place bet by picking the slot(s) on the 10×10 matrix. At end of the selected sports game, a winning slot will be determined from the slots picked before the cut-off time. Spectators of such sports will get a higher sense of thrill and better sense of satisfaction along with the betting device and the method disclosed herein.Type: ApplicationFiled: December 22, 2009Publication date: June 23, 2011Inventors: Felix Roderick Zafra Doctor, Tuan Anh Vo
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Patent number: 6416158Abstract: A device for the transport and/or metering of marking material includes a plurality of phased electrodes, for example formed on a substrate. An electrostatic traveling wave may be generated along the electrodes to sequentially attract particles of marking material, and thereby transport them to a desired location. The electrodes may be formed in a planar structure. A matrix interconnection scheme allows for reduced lead count.Type: GrantFiled: September 29, 1999Date of Patent: July 9, 2002Assignee: Xerox CorporationInventors: Philip D. Floyd, Tuan Anh Vo, Kaiser H. Wong, Gregory B. Anderson, Eric Peeters, Jaan Noolandi, Meng H. Lean, Armin R. Volkel, John E. Northrup, Jurgen Daniel, G. A. Neville Connell
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Patent number: 6328436Abstract: In a ballistic aerosol marking device or the like, marking material flows from a material reservoir to a delivery channel via a port. Flow of marking material is facilitated by the provision of electrostatic marking material moving structures in or near the walls of the marking material reservoir. Marking material may be set into a continuous motion past the port and controllably extracted from the reservoir into the channel.Type: GrantFiled: December 29, 1999Date of Patent: December 11, 2001Assignee: Xerox CorporationInventors: Philip D. Floyd, David K. Biegelsen, Eric Peeters, Frederick J. Endicott, Richard P. N. Veregin, Gregory B. Anderson, Karen A. Moffat, Maria N. V. McDougall, Jaan Noolandi, Armin R. Volkel, Tuan Anh Vo, Kaiser H. Wong, Peter M. Kazmaier
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Patent number: 6293659Abstract: A ballistic aerosol marking device includes, marking material which flows from a material reservoir to a delivery channel via a port. Flow of marking material is facilitated by the creation of a fluidized bed or aerosol of marking material in the reservoir. Gas flow together with mechanical or electromechanical assistance can be used to assist in the generation of the fluidized bed or aerosol.Type: GrantFiled: December 29, 1999Date of Patent: September 25, 2001Assignee: Xerox CorporationInventors: Philip D. Floyd, David K. Biegelsen, Eric Peeters, Frederick J. Endicott, Richard P. N. Veregin, Gregory B. Anderson, Karen A. Moffat, Maria N. V McDougall, Jaan Noolandi, Armin R. Volkel, Tuan Anh Vo, Kaiser H. Wong, Peter M. Kazmaier
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Patent number: 6291088Abstract: An inorganic, top-surface, semiconducting dielectric overcoat, having a selected time constant permits electric field charge and dissipation at a selected rate to facilitate particulate material movement over an underlying electrode grid. The coating may be made from nitrides, oxides or oxy-nitrides of silicon, or amorphous silicon. A planarized, wear resistant, chemically stable surface, and minimized inter-electrode build-up are also provided by the overcoat.Type: GrantFiled: September 30, 1998Date of Patent: September 18, 2001Assignee: Xerox CorporationInventors: Kaiser H. Wong, Tuan Anh Vo
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Patent number: 6292643Abstract: In a xerographic printer, the use of traveling wave toner transport devices to deliver toner from the individual single color toner sumps to an intermediate traveling wave belt by utilizing traveling wave roll-type devices, and the traveling wave belt to carry the combination of toners to the photoreceptor. The toner could be composed of two or more toner color particles which are used as a custom color. The traveling wave transport belt mixes the two or more colors while transporting them, so that pre-mixing a custom color, and delivering it separately to the photoreceptor, is not necessary, thus enabling the use of an ordinary CMYK color printer to be used to print custom colors.Type: GrantFiled: July 10, 2000Date of Patent: September 18, 2001Assignee: Xerox CorporationInventor: Tuan Anh Vo
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Patent number: 6290342Abstract: A device for the transport of particulate marking material includes a plurality of interdigitated electrodes formed on a substrate. An electrostatic traveling wave may be generated across the electrodes to sequentially attract particles of marking material, and thereby transport them to a desired location. The electrodes may be integrally formed with driving circuitry, and may be staggered to minimize or eliminate cross-talk.Type: GrantFiled: September 30, 1998Date of Patent: September 18, 2001Assignee: Xerox CorporationInventors: Tuan Anh Vo, Dan A. Hays, Eric Peeters, Abdul M. Elhatem, Kaiser H. Wong, Joel A. Kubby, Jaan Noolandi
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Patent number: 6265050Abstract: An organic, top-surface, semiconducting dielectric overcoat, having a selected time constant permits electric field charge and dissipation at a selected rate to facilitate particulate material movement over an underlying electrode grid. The coating may be made from a compound including bisphenol A polycarbonate, or similar material, and a charge transport molecule (e.g. m-TBD). A planarized, wear resistant, chemically stable surface, with minimized inter-electrode build-up are also provided by the overcoat.Type: GrantFiled: September 30, 1998Date of Patent: July 24, 2001Assignee: Xerox CorporationInventors: Kaiser H. Wong, Tuan Anh Vo, Bing R. Hsieh
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Patent number: 6201633Abstract: A micro-electromechanical bistable shutter display device is provided capable of being implemented for both small screen, high resolution devices and for large billboard-type displays. The micro-electromechanical shutter assembly has bi-stability characteristics which allow the use of only a holding voltage to maintain an image. The micro-electromechanical shutter assembly includes a shutter having petal-like shutter segments covering reflective or transmittive films. To expose the film in a particular shutter assembly, its shutter segments are moved from the horizontal to a vertical position using electrostatic attraction forces to “collapse” the torsionally-hinged shutter segments. The shutter assembly can have a number of segments, as long as the resulting shutter assembly shape can be stacked to form a dense 2D array.Type: GrantFiled: June 7, 1999Date of Patent: March 13, 2001Assignee: Xerox CorporationInventors: Eric Peeters, Jackson Ho, Feixia Pan, Raj B. Apte, Joel A. Kubby, Ronald T. Fulks, Decai Sun, Patrick Y. Maeda, David Fork, Robert Thornton, Ross Bringans, G. A. Neville Connell, Philip Don Floyd, Tuan Anh Vo, Koenraad Van Schuylenbergh
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Patent number: 6175707Abstract: An apparatus for developing a latent image recorded on an imaging surface, including a housing defining a chamber for storing a supply of developer material including toner; a dispensing system for dispensing toner of a first color and toner of a second color into said housing; an air system for fuildizing and mixing toner of said first color and toner of said second color; a donor member, spaced from the imaging surface, for transporting toner on the surface thereof to a region opposed from the imaging surface, said donor member includes an electrode array on the outer surface thereof, said array including a plurality of spaced apart electrodes extending substantial across width of the surface of the donor member; and a multi-phase voltage source operatively coupled to said electrode array, the phase being shifted with respect to each other such as to create an electrodynamic wave pattern for moving toner particles to and from a development zone.Type: GrantFiled: November 29, 1999Date of Patent: January 16, 2001Assignee: Xerox CorporationInventors: Elliott A. Eklund, Yelena Shapiro, Jack T. Lestrange, Michael D. Thompson, Tuan Anh Vo, Kaiser H. Wong
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Patent number: 6070036Abstract: An apparatus for developing a latent image recorded on an imaging surface, comprising, a housing defining a chamber storing a supply of developer material; a donor member, spaced from the imaging surface, for transporting developer material on the surface thereof to a region opposed from the imaging surface, said donor member includes an electrode array on the outer surface thereof, said array including a plurality of spaced apart electrodes extending substantial across width of the surface of the donor member; means for loading developer material onto said donor member, a multi-phase voltage source operatively coupled to said electrode array, the phase being shifted with respect to each other such as to create an electrodynamic wave pattern having at a phase velocity for moving developer material to and from a development zone; and an AC voltage source operatively coupled to said electrode array, for applying an AC voltage in said development zone between the donor member and said imaging surface.Type: GrantFiled: May 17, 1999Date of Patent: May 30, 2000Assignee: Xerox CorporationInventors: Michael D. Thompson, Tuan Anh Vo
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Patent number: 5892303Abstract: A compact design for the electronic circuits to provide electrical contact to a SED roll of a segmented electrode development unit is provided. In this invention, all the required high voltage and low voltage circuitry is placed on a printed flexible circuit which is folded and rolled into a cylindrical circuit to be connected to the SED roll. The flexible printed circuit has a plurality of output terminals each of which will be connected to one of the electrodes of the SED roll.Type: GrantFiled: March 28, 1997Date of Patent: April 6, 1999Assignee: Xerox CorporationInventors: William H. Wayman, Abdul M. Elhatem, Paul C. Tien, Tuan Anh Vo
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Patent number: 5893015Abstract: An apparatus for transporting charged particles in a predetermine path which includes a donor member that is adapted to move charged particles on the surface thereof in the predetermined path. The donor member includes an electrode array on the outer surface thereof; the array including a plurality of spaced apart electrodes extending substantially across width of the surface of the donor member. A multi-phase DC voltage source is operatively coupled to the electrode array, the phase being shifted with respect to each other such as to create an electrodynamic wave pattern capable of moving charged particles on the surface thereof in the predetermined path.Type: GrantFiled: June 24, 1996Date of Patent: April 6, 1999Assignee: Xerox CorporationInventors: Mohammad M. Mojarradi, James M. Donohue, Tuan Anh Vo
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Patent number: 5822652Abstract: There is disclosed a compact design for the electronic circuits required to provide electrical contact to a SED roll of a segmented electrode development unit. In this invention, all the required high voltage and low voltage circuitry is placed on a printed flexible circuit which is folded and rolled into a cylindrical circuit to be connected to the SED roll. The flexible printed circuit has a plurality of output terminals each of which will be connected to one of the electrodes of the SED roll. In this invention, a spool is used to support the connection of the cylindrical circuit to the SED roll.Type: GrantFiled: March 28, 1997Date of Patent: October 13, 1998Assignee: Xerox CorporationInventors: Abdul M. Elhatem, William H. Wayman, Paul C. Tien, Tuan Anh Vo
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Patent number: 5717986Abstract: A development system which includes a flexible donor belt having groups of electrode array near the surface of the belt is disclosed. The Electrode array has group areas in which perform the function of: Loading; Transferring; Developing; Transferring and Unloading. Each electrode array group area is independently addressable and operatively connected to voltage source in order to supply a voltage in the order of .quadrature.0-1000 volts AC or DC to each group area. The electrodes array group area picks up the toner from the magnetic brush. An electrode array group area connected to the voltage source via phase shifting circuitry such that a traveling wave pattern is established.Type: GrantFiled: June 24, 1996Date of Patent: February 10, 1998Assignee: Xerox CorporationInventors: Tuan Anh Vo, Mohammad M. Mojarradi, Dennis W. Sandstrom