Patents by Inventor Christine Dong

Christine Dong 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: 8220699
    Abstract: Described herein is an apparatus and method for providing an inerting gas during the application of soldering to a work piece. In one aspect, there is provided an apparatus that is placed atop of a solder reservoir and comprises a plurality of porous tubes that are in fluid communication with an inerting gas. In another aspect, there is provided a method for providing an inerting gas to a wave soldering apparatus comprising the steps of, among other things, placing an apparatus atop at least one edge of the solder reservoir wherein the apparatus comprises a plurality of tubes comprising one or more openings in fluid communication with an inerting gas source. In a further aspect, at least one of the tubes comprises a non-stick coating or is comprised of a porous non-stick material such as a sleeve.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: July 17, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Chun Christine Dong, Gregory Khosrov Arsianian, Ranajit Ghosh, Victor Wang, Jerry Wu
  • Publication number: 20120055980
    Abstract: Described herein is an apparatus and method for providing an inerting gas during the application of soldering to a work piece. In one aspect, there is provided an apparatus that is placed atop of a solder reservoir and comprises a plurality of porous tubes that are in fluid communication with an inerting gas. In another aspect, there is provided a method for providing an inerting gas to a wave soldering apparatus comprising the steps of, among other things, placing an apparatus atop at least one edge of the solder reservoir wherein the apparatus comprises a plurality of tubes comprising one or more openings in fluid communication with an inerting gas source. In a further aspect, at least one of the tubes comprises a non-stick coating or is comprised of a porous non-stick material such as a sleeve.
    Type: Application
    Filed: March 4, 2011
    Publication date: March 8, 2012
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Chun Christine Dong, Gregory Khosrov Arslanian, Ranajit Ghosh, Victor Wang, Jerry Wu
  • Patent number: 8119016
    Abstract: The present invention relates to a method for removing metal oxides from a substrate surface. In one particular embodiment, the method comprises: providing a substrate, a first, and a second electrode that reside within a target area; passing a gas mixture comprising a reducing gas through the target area; supplying an amount of energy to the first and/or the second electrode to generate electrons within the target area wherein at least a portion of the electrons attach to a portion of the reducing gas and form a negatively charged reducing gas; and contacting the substrate with the negatively charged reducing gas to reduce the metal oxides on the surface of the substrate.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: February 21, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Chun Christine Dong, Wayne Thomas McDermott, Alexander Schwarz, Gregory Khosrov Arslanian, Richard E. Patrick
  • Publication number: 20110229377
    Abstract: The present invention provides a method and apparatus for the dry fluxing of at least one component and/or solder surface via electron attachment. In one embodiment, there is provided a method for removing oxides from the surface of a component comprising: providing a component on a substrate wherein the substrate is grounded or has a positive electrical potential to form a target assembly; passing a gas mixture comprising a reducing gas through an ion generator comprising a first and a second electrode; supplying an amount of voltage to at least one of the first and second electrodes sufficient to generate electrons wherein the electrons attach to at least a portion of the reducing gas and form a negatively charged reducing gas; and contacting the target assembly with the negatively charged reducing gas to reduce the oxides on the component.
    Type: Application
    Filed: June 2, 2011
    Publication date: September 22, 2011
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Chun Christine Dong, Wayne Thomas McDermott, Richard E. Patrick, Alexander Schwarz
  • Publication number: 20110204123
    Abstract: Described herein are a method and an apparatus for removing metal oxides and/or forming solder joints on at least a portion of a substrate surface within a target area. In one particular embodiment, the method and apparatus form a solder joint within a substrate comprising a layer having a plurality of solder bumps by providing one or more energizing electrodes and exposing at least a portion of the layer and solder bumps to the energizing electrode.
    Type: Application
    Filed: August 16, 2010
    Publication date: August 25, 2011
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Chun Christine Dong, Ranajit Ghosh, Gregory Khosrov Arslanian
  • Patent number: 7977598
    Abstract: The present invention provides a method and apparatus for the dry fluxing of at least one component and/or solder surface via electron attachment. In one embodiment, there is provided a method for removing oxides from the surface of a component comprising: providing a component on a substrate wherein the substrate is grounded or has a positive electrical potential to form a target assembly; passing a gas mixture comprising a reducing gas through an ion generator comprising a first and a second electrode; supplying an amount of voltage to at least one of the first and second electrodes sufficient to generate electrons wherein the electrons attach to at least a portion of the reducing gas and form a negatively charged reducing gas; and contacting the target assembly with the negatively charged reducing gas to reduce the oxides on the component.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: July 12, 2011
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Chun Christine Dong, Wayne Thomas McDermott, Richard E. Patrick, Alexander Schwarz
  • Publication number: 20110094679
    Abstract: An apparatus and a method comprising same for removing metal oxides from a substrate surface are disclosed herein. In one particular embodiment, the apparatus comprises an electrode assembly that has a housing that is at least partially comprised of an insulating material and having an internal volume and at least one fluid inlet that is in fluid communication with the internal volume; a conductive base connected to the housing comprising a plurality of conductive tips that extend therefrom into a target area and a plurality of perforations that extend therethrough and are in fluid communication with the internal volume to allow for a passage of a gas mixture comprising a reducing gas.
    Type: Application
    Filed: December 15, 2010
    Publication date: April 28, 2011
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Chun Christine Dong, Wayne Thomas McDermott, Alexander Schwarz, Gregory Khosrov Arslanian, Richard E. Patrick, Gary A. Orbeck, Donald A. Seccombe, JR.
  • Patent number: 7897029
    Abstract: The present invention relates to a method for removing metal oxides from a substrate surface. In one particular embodiment, the method comprises: providing a substrate, a first, and a second electrode that reside within a target area; passing a gas mixture comprising a reducing gas through the target area; supplying an amount of energy to the first and/or the second electrode to generate electrons within the target area wherein at least a portion of the electrons attach to a portion of the reducing gas and form a negatively charged reducing gas; and contacting the substrate with the negatively charged reducing gas to reduce the metal oxides on the surface of the substrate.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: March 1, 2011
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Chun Christine Dong, Richard E. Patrick, Gregory Khosrov Arslanian
  • Patent number: 7883602
    Abstract: An apparatus and a method comprising same for removing metal oxides from a substrate surface are disclosed herein. In one particular embodiment, the apparatus comprises an electrode assembly that has a housing that is at least partially comprised of an insulating material and having an internal volume and at least one fluid inlet that is in fluid communication with the internal volume; a conductive base connected to the housing comprising a plurality of conductive tips that extend therefrom into a target area and a plurality of perforations that extend therethrough and are in fluid communication with the internal volume to allow for a passage of a gas mixture comprising a reducing gas.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: February 8, 2011
    Assignees: Air Products and Chemicals, Inc., BTU International, Inc.
    Inventors: Chun Christine Dong, Wayne Thomas McDermott, Alexander Schwarz, Gregory Khosrov Arslanian, Richard E. Patrick, Gary A. Orbeck, Donald A. Seccombe, Jr.
  • Publication number: 20090236236
    Abstract: Described herein are a method and an apparatus for removing metal oxides from a substrate surface within a target area. In one particular embodiment, the method and apparatus has an energizing electrode which has an array of protruding conductive tips that are electrically connected by a conductive wire and separated into a first electrically connected group and a second electrically connected group wherein at least a portion of the conductive tips are activated by a DC voltage source that is negatively biased to generate electrons within the target area that attach to at least a portion of a reducing gas that is present in the target area to form a negatively charged reducing gas that contacts the treating surface to reduce the metal oxides on the treating surface of the substrate.
    Type: Application
    Filed: April 30, 2009
    Publication date: September 24, 2009
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Chun Christine Dong, Richard E. Patrick, Gregory Khosrov Arslanian, Ranajit Ghosh
  • Publication number: 20090223831
    Abstract: The present invention relates to a method for removing metal oxides from a substrate surface. In one particular embodiment, the method comprises: providing a substrate, a first, and a second electrode that reside within a target area; passing a gas mixture comprising a reducing gas through the target area; supplying an amount of energy to the first and/or the second electrode to generate electrons within the target area wherein at least a portion of the electrons attach to a portion of the reducing gas and form a negatively charged reducing gas; and contacting the substrate with the negatively charged reducing gas to reduce the metal oxides on the surface of the substrate.
    Type: Application
    Filed: May 13, 2008
    Publication date: September 10, 2009
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Chun Christine Dong, Richard E. Patrick, Gregory Khosrov Arslanian
  • Patent number: 7563380
    Abstract: An apparatus and a method comprising same for removing metal oxides from a substrate surface are disclosed herein. In one particular embodiment, the apparatus comprises an electrode assembly that has a housing that is at least partially comprised of an insulating material and having an internal volume and at least one fluid inlet that is in fluid communication with the internal volume; a conductive base connected to the housing comprising a plurality of conductive tips that extend therefrom into a target area and a plurality of perforations that extend therethrough and are in fluid communication with the internal volume to allow for a passage of a gas mixture comprising a reducing gas.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: July 21, 2009
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Chun Christine Dong, Wayne Thomas McDermott, Alexander Schwarz, Gregory Khosrov Arslanian, Richard E. Patrick, Gary A. Orbeck, Donald A. Seccombe, Jr.
  • Publication number: 20090008426
    Abstract: A method of detecting and calibrating dry fluxing metal surfaces of one or more components to be soldered by electron attachment using a gas mixture of reducing gas comprising hydrogen and deuterium, comprising the steps of: a) providing one or more components to be soldered which are connected to a first electrode as a target assembly; b) providing a second electrode adjacent the target assembly; c) providing a gas mixture comprising a reducing gas comprising hydrogen and deuterium between the first and second electrodes; d) providing a direct current (DC) voltage to the first and second electrodes to form an emission current between the electrodes and donating electrons to the reducing gas to form negatively charged ionic reducing gas and molecules of hydrogen bonded to deuterium; e) contacting the target assembly with the negatively charged ionic reducing gas and reducing oxides on the target assembly. Related apparatus is also disclosed.
    Type: Application
    Filed: September 19, 2008
    Publication date: January 8, 2009
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Chun Christine Dong, Eugene Joseph Karwacki, JR., Richard E. Patrick
  • Publication number: 20080295966
    Abstract: An apparatus and a method comprising same for removing metal oxides from a substrate surface are disclosed herein. In one particular embodiment, the apparatus comprises an electrode assembly that has a housing that is at least partially comprised of an insulating material and having an internal volume and at least one fluid inlet that is in fluid communication with the internal volume; a conductive base connected to the housing comprising a plurality of conductive tips that extend therefrom into a target area and a plurality of perforations that extend therethrough and are in fluid communication with the internal volume to allow for a passage of a gas mixture comprising a reducing gas.
    Type: Application
    Filed: August 8, 2008
    Publication date: December 4, 2008
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Chun Christine Dong, Wayne Thomas McDermott, Alexander Schwarz, Gregory Khosrov Arslanian, Richard E. Patrick, Gary A. Orbeck, Donald A. Seccombe, JR.
  • Patent number: 7446078
    Abstract: The present invention provides an adsorbent for removing water and/or other oxygen-containing impurities from a fluid comprising ammonia to the ppb level and methods for making and using same. The adsorbent preferably comprises a substrate having a plurality of pores and a surface area that ranges from about 100 to about 2,500 m2/g and a compound disposed within a least a portion of the substrate. In certain preferred embodiments, the compound comprises at least one cation from the group consisting of ammonium (I), lithium (I), sodium (I), potassium (I), cesium (I); magnesium (II), calcium (II), strontium (II), barium (II), manganese (II), nickel (II), iron (II), zinc (II); aluminum (III), indium (III), iron (III), and zirconium (IV) or combinations thereof that is ionically associated with an anion from the group consisting of halide, sulfide, sulfite, or sulfate.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: November 4, 2008
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Chun Christine Dong, Madhukar Bhaskara Rao, Dingjun Wu
  • Patent number: 7434719
    Abstract: A method of detecting and calibrating dry fluxing metal surfaces of one or more components to be soldered by electron attachment using a gas mixture of reducing gas comprising hydrogen and deuterium, comprising the steps of: a) providing one or more components to be soldered which are connected to a first electrode as a target assembly; b) providing a second electrode adjacent the target assembly; c) providing a gas mixture comprising a reducing gas comprising hydrogen and deuterium between the first and second electrodes; d) providing a direct current (DC) voltage to the first and second electrodes to form an emission current between the electrodes and donating electrons to the reducing gas to form negatively charged ionic reducing gas and molecules of hydrogen bonded to deuterium; e) contacting the target assembly with the negatively charged ionic reducing gas and reducing oxides on the target assembly. Related apparatus is also disclosed.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: October 14, 2008
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Chun Christine Dong, Eugene Joseph Karwacki, Jr., Richard E. Patrick
  • Publication number: 20080149690
    Abstract: The present invention relates to a method for removing metal oxides from a substrate surface. In one particular embodiment, the method comprises: providing a substrate, a first, and a second electrode that reside within a target area; passing a gas mixture comprising a reducing gas through the target area; supplying an amount of energy to the first and/or the second electrode to generate electrons within the target area wherein at least a portion of the electrons attach to a portion of the reducing gas and form a negatively charged reducing gas; and contacting the substrate with the negatively charged reducing gas to reduce the metal oxides on the surface of the substrate.
    Type: Application
    Filed: March 4, 2008
    Publication date: June 26, 2008
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Chun Christine Dong, Wayne Thomas McDermott, Alexander Schwarz, Gregory Khosrov Arslanian, Richard E. Patrick
  • Patent number: 7387738
    Abstract: The present invention relates to a method for removing metal oxides from a substrate surface. In one particular embodiment, the method comprises: providing a substrate, a first, and a second electrode that reside within a target area; passing a gas mixture comprising a reducing gas through the target area; supplying an amount of energy to the first and/or the second electrode to generate electrons within the target area wherein at least a portion of the electrons attach to a portion of the reducing gas and form a negatively charged reducing gas; and contacting the substrate with the negatively charged reducing gas to reduce the metal oxides on the surface of the substrate.
    Type: Grant
    Filed: April 28, 2003
    Date of Patent: June 17, 2008
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Chun Christine Dong, Wayne Thomas McDermott, Alexander Schwarz, Gregory Khosrov Arslanian, Richard E. Patrick
  • Patent number: 7307826
    Abstract: The present invention provides a method and apparatus for the dry fluxing of at least one component and/or solder surface via electron attachment. In one embodiment, there is provided a method for removing oxides from the surface of a component comprising: providing a component on a substrate wherein the substrate is grounded or has a positive electrical potential to form a target assembly; passing a gas mixture comprising a reducing gas through an ion generator comprising a first and a second electrode; supplying an amount of voltage to at least one of the first and second electrodes sufficient to generate electrons wherein the electrons attach to at least a portion of the reducing gas and form a negatively charged reducing gas; and contacting the target assembly with the negatively charged reducing gas to reduce the oxides on the component.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: December 11, 2007
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Chun Christine Dong, Wayne Thomas McDermott, Richard E. Patrick, Alexander Schwarz
  • Publication number: 20070193026
    Abstract: This invention is directed to a method of forming electrical conductors comprised of conductive metals generally carried on a substrate. In the method, a conductor formulation generally comprised of metal particles or metal precursor or mixture thereof, typically in the form of an ink or paste, is applied to the substrate and converted into a conductive metal by application of sufficient heat and for a sufficient time to effect sintering thereof while in the presence of a negatively charged ionic reducing gas.
    Type: Application
    Filed: July 6, 2006
    Publication date: August 23, 2007
    Inventors: Chun Christine Dong, Eugene Joseph Karwacki, Richard E. Patrick, David Allen Roberts, Robert Krantz Pinschmidt, John Anthony Thomas Norman, John Christopher Ivankovits