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).
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Patent number: 8220699Abstract: 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: GrantFiled: March 4, 2011Date of Patent: July 17, 2012Assignee: Air Products and Chemicals, Inc.Inventors: Chun Christine Dong, Gregory Khosrov Arsianian, Ranajit Ghosh, Victor Wang, Jerry Wu
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Publication number: 20120055980Abstract: 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: ApplicationFiled: March 4, 2011Publication date: March 8, 2012Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Chun Christine Dong, Gregory Khosrov Arslanian, Ranajit Ghosh, Victor Wang, Jerry Wu
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Patent number: 8119016Abstract: 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: GrantFiled: March 4, 2008Date of Patent: February 21, 2012Assignee: Air Products and Chemicals, Inc.Inventors: Chun Christine Dong, Wayne Thomas McDermott, Alexander Schwarz, Gregory Khosrov Arslanian, Richard E. Patrick
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Publication number: 20110229377Abstract: 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: ApplicationFiled: June 2, 2011Publication date: September 22, 2011Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Chun Christine Dong, Wayne Thomas McDermott, Richard E. Patrick, Alexander Schwarz
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Publication number: 20110204123Abstract: 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: ApplicationFiled: August 16, 2010Publication date: August 25, 2011Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Chun Christine Dong, Ranajit Ghosh, Gregory Khosrov Arslanian
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Patent number: 7977598Abstract: 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: GrantFiled: April 7, 2004Date of Patent: July 12, 2011Assignee: Air Products and Chemicals, Inc.Inventors: Chun Christine Dong, Wayne Thomas McDermott, Richard E. Patrick, Alexander Schwarz
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Publication number: 20110094679Abstract: 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: ApplicationFiled: December 15, 2010Publication date: April 28, 2011Applicant: 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.
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Patent number: 7897029Abstract: 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: GrantFiled: May 13, 2008Date of Patent: March 1, 2011Assignee: Air Products and Chemicals, Inc.Inventors: Chun Christine Dong, Richard E. Patrick, Gregory Khosrov Arslanian
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Patent number: 7883602Abstract: 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: GrantFiled: August 8, 2008Date of Patent: February 8, 2011Assignees: 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.
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Publication number: 20090236236Abstract: 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: ApplicationFiled: April 30, 2009Publication date: September 24, 2009Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Chun Christine Dong, Richard E. Patrick, Gregory Khosrov Arslanian, Ranajit Ghosh
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Publication number: 20090223831Abstract: 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: ApplicationFiled: May 13, 2008Publication date: September 10, 2009Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Chun Christine Dong, Richard E. Patrick, Gregory Khosrov Arslanian
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Patent number: 7563380Abstract: 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: GrantFiled: April 7, 2004Date of Patent: July 21, 2009Assignee: 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.
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Publication number: 20090008426Abstract: 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: ApplicationFiled: September 19, 2008Publication date: January 8, 2009Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Chun Christine Dong, Eugene Joseph Karwacki, JR., Richard E. Patrick
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Publication number: 20080295966Abstract: 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: ApplicationFiled: August 8, 2008Publication date: December 4, 2008Applicant: 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.
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Patent number: 7446078Abstract: 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: GrantFiled: July 9, 2002Date of Patent: November 4, 2008Assignee: Air Products and Chemicals, Inc.Inventors: Chun Christine Dong, Madhukar Bhaskara Rao, Dingjun Wu
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Patent number: 7434719Abstract: 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: GrantFiled: December 9, 2005Date of Patent: October 14, 2008Assignee: Air Products and Chemicals, Inc.Inventors: Chun Christine Dong, Eugene Joseph Karwacki, Jr., Richard E. Patrick
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Publication number: 20080149690Abstract: 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: ApplicationFiled: March 4, 2008Publication date: June 26, 2008Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Chun Christine Dong, Wayne Thomas McDermott, Alexander Schwarz, Gregory Khosrov Arslanian, Richard E. Patrick
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Patent number: 7387738Abstract: 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: GrantFiled: April 28, 2003Date of Patent: June 17, 2008Assignee: Air Products and Chemicals, Inc.Inventors: Chun Christine Dong, Wayne Thomas McDermott, Alexander Schwarz, Gregory Khosrov Arslanian, Richard E. Patrick
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Patent number: 7307826Abstract: 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: GrantFiled: March 27, 2006Date of Patent: December 11, 2007Assignee: Air Products and Chemicals, Inc.Inventors: Chun Christine Dong, Wayne Thomas McDermott, Richard E. Patrick, Alexander Schwarz
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Publication number: 20070193026Abstract: 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: ApplicationFiled: July 6, 2006Publication date: August 23, 2007Inventors: Chun Christine Dong, Eugene Joseph Karwacki, Richard E. Patrick, David Allen Roberts, Robert Krantz Pinschmidt, John Anthony Thomas Norman, John Christopher Ivankovits